20951040

素因数分解:

$2^{12}\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1$

素因数の和:74

約数の個数: 208

約数和(自身を含む): 75488256

約数和(自身を除く): 54537216

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 32, 33, 40, 44, 48, 55, 60, 62, 64, 66, 80, 88, 93, 96, 110, 120, 124, 128, 132, 155, 160, 165, 176, 186, 192, 220, 240, 248, 256, 264, 310, 320, 330, 341, 352, 372, 384, 440, 465, 480, 496, 512, 528, 620, 640, 660, 682, 704, 744, 768, 880, 930, 960, 992, 1023, 1024, 1056, 1240, 1280, 1320, 1364, 1408, 1488, 1536, 1705, 1760, 1860, 1920, 1984, 2046, 2048, 2112, 2480, 2560, 2640, 2728, 2816, 2976, 3072, 3410, 3520, 3720, 3840, 3968, 4092, 4096, 4224, 4960, 5115, 5120, 5280, 5456, 5632, 5952, 6144, 6820, 7040, 7440, 7680, 7936, 8184, 8448, 9920, 10230, 10240, 10560, 10912, 11264, 11904, 12288, 13640, 14080, 14880, 15360, 15872, 16368, 16896, 19840, 20460, 20480, 21120, 21824, 22528, 23808, 27280, 28160, 29760, 30720, 31744, 32736, 33792, 39680, 40920, 42240, 43648, 45056, 47616, 54560, 56320, 59520, 61440, 63488, 65472, 67584, 79360, 81840, 84480, 87296, 95232, 109120, 112640, 119040, 126976, 130944, 135168, 158720, 163680, 168960, 174592, 190464, 218240, 225280, 238080, 261888, 317440, 327360, 337920, 349184, 380928, 436480, 476160, 523776, 634880, 654720, 675840, 698368, 872960, 952320, 1047552, 1309440, 1396736, 1745920, 1904640, 2095104, 2618880, 3491840, 4190208, 5237760, 6983680, 10475520, 20951040]

約数ペア:

[(1, 20951040), (2, 10475520), (3, 6983680), (4, 5237760), (5, 4190208), (6, 3491840), (8, 2618880), (10, 2095104), (11, 1904640), (12, 1745920), (15, 1396736), (16, 1309440), (20, 1047552), (22, 952320), (24, 872960), (30, 698368), (31, 675840), (32, 654720), (33, 634880), (40, 523776), (44, 476160), (48, 436480), (55, 380928), (60, 349184), (62, 337920), (64, 327360), (66, 317440), (80, 261888), (88, 238080), (93, 225280), (96, 218240), (110, 190464), (120, 174592), (124, 168960), (128, 163680), (132, 158720), (155, 135168), (160, 130944), (165, 126976), (176, 119040), (186, 112640), (192, 109120), (220, 95232), (240, 87296), (248, 84480), (256, 81840), (264, 79360), (310, 67584), (320, 65472), (330, 63488), (341, 61440), (352, 59520), (372, 56320), (384, 54560), (440, 47616), (465, 45056), (480, 43648), (496, 42240), (512, 40920), (528, 39680), (620, 33792), (640, 32736), (660, 31744), (682, 30720), (704, 29760), (744, 28160), (768, 27280), (880, 23808), (930, 22528), (960, 21824), (992, 21120), (1023, 20480), (1024, 20460), (1056, 19840), (1240, 16896), (1280, 16368), (1320, 15872), (1364, 15360), (1408, 14880), (1488, 14080), (1536, 13640), (1705, 12288), (1760, 11904), (1860, 11264), (1920, 10912), (1984, 10560), (2046, 10240), (2048, 10230), (2112, 9920), (2480, 8448), (2560, 8184), (2640, 7936), (2728, 7680), (2816, 7440), (2976, 7040), (3072, 6820), (3410, 6144), (3520, 5952), (3720, 5632), (3840, 5456), (3968, 5280), (4092, 5120), (4096, 5115), (4224, 4960)]