20280449920

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{811}}^1\times {\mathrm{953}}^1$

素因数の和:1824

約数の個数: 128

約数和(自身を含む): 49778880480

約数和(自身を除く): 29498430560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 320, 328, 410, 640, 656, 811, 820, 953, 1312, 1622, 1640, 1906, 2624, 3244, 3280, 3812, 4055, 4765, 5248, 6488, 6560, 7624, 8110, 9530, 12976, 13120, 15248, 16220, 19060, 25952, 26240, 30496, 32440, 33251, 38120, 39073, 51904, 60992, 64880, 66502, 76240, 78146, 103808, 121984, 129760, 133004, 152480, 156292, 166255, 195365, 259520, 266008, 304960, 312584, 332510, 390730, 519040, 532016, 609920, 625168, 665020, 772883, 781460, 1064032, 1250336, 1330040, 1545766, 1562920, 2128064, 2500672, 2660080, 3091532, 3125840, 3864415, 4256128, 5001344, 5320160, 6183064, 6251680, 7728830, 10640320, 12366128, 12503360, 15457660, 21280640, 24732256, 25006720, 30915320, 31688203, 49464512, 61830640, 63376406, 98929024, 123661280, 126752812, 158441015, 247322560, 253505624, 316882030, 494645120, 507011248, 633764060, 1014022496, 1267528120, 2028044992, 2535056240, 4056089984, 5070112480, 10140224960, 20280449920]

約数ペア:

[(1, 20280449920), (2, 10140224960), (4, 5070112480), (5, 4056089984), (8, 2535056240), (10, 2028044992), (16, 1267528120), (20, 1014022496), (32, 633764060), (40, 507011248), (41, 494645120), (64, 316882030), (80, 253505624), (82, 247322560), (128, 158441015), (160, 126752812), (164, 123661280), (205, 98929024), (320, 63376406), (328, 61830640), (410, 49464512), (640, 31688203), (656, 30915320), (811, 25006720), (820, 24732256), (953, 21280640), (1312, 15457660), (1622, 12503360), (1640, 12366128), (1906, 10640320), (2624, 7728830), (3244, 6251680), (3280, 6183064), (3812, 5320160), (4055, 5001344), (4765, 4256128), (5248, 3864415), (6488, 3125840), (6560, 3091532), (7624, 2660080), (8110, 2500672), (9530, 2128064), (12976, 1562920), (13120, 1545766), (15248, 1330040), (16220, 1250336), (19060, 1064032), (25952, 781460), (26240, 772883), (30496, 665020), (32440, 625168), (33251, 609920), (38120, 532016), (39073, 519040), (51904, 390730), (60992, 332510), (64880, 312584), (66502, 304960), (76240, 266008), (78146, 259520), (103808, 195365), (121984, 166255), (129760, 156292), (133004, 152480)]