81338880

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 320

約数和(自身を含む): 318193920

約数和(自身を除く): 236855040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 64, 68, 70, 80, 84, 85, 89, 96, 102, 105, 112, 119, 120, 128, 136, 140, 160, 168, 170, 178, 192, 204, 210, 224, 238, 240, 255, 256, 267, 272, 280, 320, 336, 340, 356, 357, 384, 408, 420, 445, 448, 476, 480, 510, 512, 534, 544, 560, 595, 623, 640, 672, 680, 712, 714, 768, 816, 840, 890, 896, 952, 960, 1020, 1068, 1088, 1120, 1190, 1246, 1280, 1335, 1344, 1360, 1424, 1428, 1513, 1536, 1632, 1680, 1780, 1785, 1792, 1869, 1904, 1920, 2040, 2136, 2176, 2240, 2380, 2492, 2560, 2670, 2688, 2720, 2848, 2856, 3026, 3115, 3264, 3360, 3560, 3570, 3584, 3738, 3808, 3840, 4080, 4272, 4352, 4480, 4539, 4760, 4984, 5340, 5376, 5440, 5696, 5712, 6052, 6230, 6528, 6720, 7120, 7140, 7476, 7565, 7616, 7680, 8160, 8544, 8704, 8960, 9078, 9345, 9520, 9968, 10591, 10680, 10752, 10880, 11392, 11424, 12104, 12460, 13056, 13440, 14240, 14280, 14952, 15130, 15232, 16320, 17088, 17920, 18156, 18690, 19040, 19936, 21182, 21360, 21760, 22695, 22784, 22848, 24208, 24920, 26112, 26880, 28480, 28560, 29904, 30260, 30464, 31773, 32640, 34176, 36312, 37380, 38080, 39872, 42364, 42720, 43520, 45390, 45568, 45696, 48416, 49840, 52955, 53760, 56960, 57120, 59808, 60520, 60928, 63546, 65280, 68352, 72624, 74760, 76160, 79744, 84728, 85440, 90780, 91392, 96832, 99680, 105910, 113920, 114240, 119616, 121040, 127092, 130560, 136704, 145248, 149520, 152320, 158865, 159488, 169456, 170880, 181560, 182784, 193664, 199360, 211820, 227840, 228480, 239232, 242080, 254184, 290496, 299040, 304640, 317730, 318976, 338912, 341760, 363120, 387328, 398720, 423640, 456960, 478464, 484160, 508368, 580992, 598080, 635460, 677824, 683520, 726240, 774656, 797440, 847280, 913920, 956928, 968320, 1016736, 1161984, 1196160, 1270920, 1355648, 1452480, 1594880, 1694560, 1936640, 2033472, 2323968, 2392320, 2541840, 2711296, 2904960, 3389120, 3873280, 4066944, 4784640, 5083680, 5422592, 5809920, 6778240, 8133888, 10167360, 11619840, 13556480, 16267776, 20334720, 27112960, 40669440, 81338880]

約数ペア:

[(1, 81338880), (2, 40669440), (3, 27112960), (4, 20334720), (5, 16267776), (6, 13556480), (7, 11619840), (8, 10167360), (10, 8133888), (12, 6778240), (14, 5809920), (15, 5422592), (16, 5083680), (17, 4784640), (20, 4066944), (21, 3873280), (24, 3389120), (28, 2904960), (30, 2711296), (32, 2541840), (34, 2392320), (35, 2323968), (40, 2033472), (42, 1936640), (48, 1694560), (51, 1594880), (56, 1452480), (60, 1355648), (64, 1270920), (68, 1196160), (70, 1161984), (80, 1016736), (84, 968320), (85, 956928), (89, 913920), (96, 847280), (102, 797440), (105, 774656), (112, 726240), (119, 683520), (120, 677824), (128, 635460), (136, 598080), (140, 580992), (160, 508368), (168, 484160), (170, 478464), (178, 456960), (192, 423640), (204, 398720), (210, 387328), (224, 363120), (238, 341760), (240, 338912), (255, 318976), (256, 317730), (267, 304640), (272, 299040), (280, 290496), (320, 254184), (336, 242080), (340, 239232), (356, 228480), (357, 227840), (384, 211820), (408, 199360), (420, 193664), (445, 182784), (448, 181560), (476, 170880), (480, 169456), (510, 159488), (512, 158865), (534, 152320), (544, 149520), (560, 145248), (595, 136704), (623, 130560), (640, 127092), (672, 121040), (680, 119616), (712, 114240), (714, 113920), (768, 105910), (816, 99680), (840, 96832), (890, 91392), (896, 90780), (952, 85440), (960, 84728), (1020, 79744), (1068, 76160), (1088, 74760), (1120, 72624), (1190, 68352), (1246, 65280), (1280, 63546), (1335, 60928), (1344, 60520), (1360, 59808), (1424, 57120), (1428, 56960), (1513, 53760), (1536, 52955), (1632, 49840), (1680, 48416), (1780, 45696), (1785, 45568), (1792, 45390), (1869, 43520), (1904, 42720), (1920, 42364), (2040, 39872), (2136, 38080), (2176, 37380), (2240, 36312), (2380, 34176), (2492, 32640), (2560, 31773), (2670, 30464), (2688, 30260), (2720, 29904), (2848, 28560), (2856, 28480), (3026, 26880), (3115, 26112), (3264, 24920), (3360, 24208), (3560, 22848), (3570, 22784), (3584, 22695), (3738, 21760), (3808, 21360), (3840, 21182), (4080, 19936), (4272, 19040), (4352, 18690), (4480, 18156), (4539, 17920), (4760, 17088), (4984, 16320), (5340, 15232), (5376, 15130), (5440, 14952), (5696, 14280), (5712, 14240), (6052, 13440), (6230, 13056), (6528, 12460), (6720, 12104), (7120, 11424), (7140, 11392), (7476, 10880), (7565, 10752), (7616, 10680), (7680, 10591), (8160, 9968), (8544, 9520), (8704, 9345), (8960, 9078)]