261488640

素因数分解:

$2^{17}\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1$

素因数の和:68

約数の個数: 288

約数和(自身を含む): 1006629120

約数和(自身を除く): 745140480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 42, 48, 56, 57, 60, 64, 70, 76, 80, 84, 95, 96, 105, 112, 114, 120, 128, 133, 140, 152, 160, 168, 190, 192, 210, 224, 228, 240, 256, 266, 280, 285, 304, 320, 336, 380, 384, 399, 420, 448, 456, 480, 512, 532, 560, 570, 608, 640, 665, 672, 760, 768, 798, 840, 896, 912, 960, 1024, 1064, 1120, 1140, 1216, 1280, 1330, 1344, 1520, 1536, 1596, 1680, 1792, 1824, 1920, 1995, 2048, 2128, 2240, 2280, 2432, 2560, 2660, 2688, 3040, 3072, 3192, 3360, 3584, 3648, 3840, 3990, 4096, 4256, 4480, 4560, 4864, 5120, 5320, 5376, 6080, 6144, 6384, 6720, 7168, 7296, 7680, 7980, 8192, 8512, 8960, 9120, 9728, 10240, 10640, 10752, 12160, 12288, 12768, 13440, 14336, 14592, 15360, 15960, 16384, 17024, 17920, 18240, 19456, 20480, 21280, 21504, 24320, 24576, 25536, 26880, 28672, 29184, 30720, 31920, 32768, 34048, 35840, 36480, 38912, 40960, 42560, 43008, 48640, 49152, 51072, 53760, 57344, 58368, 61440, 63840, 65536, 68096, 71680, 72960, 77824, 81920, 85120, 86016, 97280, 98304, 102144, 107520, 114688, 116736, 122880, 127680, 131072, 136192, 143360, 145920, 155648, 163840, 170240, 172032, 194560, 196608, 204288, 215040, 229376, 233472, 245760, 255360, 272384, 286720, 291840, 311296, 327680, 340480, 344064, 389120, 393216, 408576, 430080, 458752, 466944, 491520, 510720, 544768, 573440, 583680, 622592, 655360, 680960, 688128, 778240, 817152, 860160, 917504, 933888, 983040, 1021440, 1089536, 1146880, 1167360, 1245184, 1361920, 1376256, 1556480, 1634304, 1720320, 1867776, 1966080, 2042880, 2179072, 2293760, 2334720, 2490368, 2723840, 2752512, 3112960, 3268608, 3440640, 3735552, 4085760, 4358144, 4587520, 4669440, 5447680, 6225920, 6537216, 6881280, 7471104, 8171520, 8716288, 9338880, 10895360, 12451840, 13074432, 13762560, 16343040, 17432576, 18677760, 21790720, 26148864, 32686080, 37355520, 43581440, 52297728, 65372160, 87162880, 130744320, 261488640]

約数ペア:

[(1, 261488640), (2, 130744320), (3, 87162880), (4, 65372160), (5, 52297728), (6, 43581440), (7, 37355520), (8, 32686080), (10, 26148864), (12, 21790720), (14, 18677760), (15, 17432576), (16, 16343040), (19, 13762560), (20, 13074432), (21, 12451840), (24, 10895360), (28, 9338880), (30, 8716288), (32, 8171520), (35, 7471104), (38, 6881280), (40, 6537216), (42, 6225920), (48, 5447680), (56, 4669440), (57, 4587520), (60, 4358144), (64, 4085760), (70, 3735552), (76, 3440640), (80, 3268608), (84, 3112960), (95, 2752512), (96, 2723840), (105, 2490368), (112, 2334720), (114, 2293760), (120, 2179072), (128, 2042880), (133, 1966080), (140, 1867776), (152, 1720320), (160, 1634304), (168, 1556480), (190, 1376256), (192, 1361920), (210, 1245184), (224, 1167360), (228, 1146880), (240, 1089536), (256, 1021440), (266, 983040), (280, 933888), (285, 917504), (304, 860160), (320, 817152), (336, 778240), (380, 688128), (384, 680960), (399, 655360), (420, 622592), (448, 583680), (456, 573440), (480, 544768), (512, 510720), (532, 491520), (560, 466944), (570, 458752), (608, 430080), (640, 408576), (665, 393216), (672, 389120), (760, 344064), (768, 340480), (798, 327680), (840, 311296), (896, 291840), (912, 286720), (960, 272384), (1024, 255360), (1064, 245760), (1120, 233472), (1140, 229376), (1216, 215040), (1280, 204288), (1330, 196608), (1344, 194560), (1520, 172032), (1536, 170240), (1596, 163840), (1680, 155648), (1792, 145920), (1824, 143360), (1920, 136192), (1995, 131072), (2048, 127680), (2128, 122880), (2240, 116736), (2280, 114688), (2432, 107520), (2560, 102144), (2660, 98304), (2688, 97280), (3040, 86016), (3072, 85120), (3192, 81920), (3360, 77824), (3584, 72960), (3648, 71680), (3840, 68096), (3990, 65536), (4096, 63840), (4256, 61440), (4480, 58368), (4560, 57344), (4864, 53760), (5120, 51072), (5320, 49152), (5376, 48640), (6080, 43008), (6144, 42560), (6384, 40960), (6720, 38912), (7168, 36480), (7296, 35840), (7680, 34048), (7980, 32768), (8192, 31920), (8512, 30720), (8960, 29184), (9120, 28672), (9728, 26880), (10240, 25536), (10640, 24576), (10752, 24320), (12160, 21504), (12288, 21280), (12768, 20480), (13440, 19456), (14336, 18240), (14592, 17920), (15360, 17024), (15960, 16384)]