20088039680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{506251}}^1$

素因数の和:506303

約数の個数: 72

約数和(自身を含む): 49669396224

約数和(自身を除く): 29581356544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 506251, 1012502, 2025004, 2531255, 4050008, 5062510, 8100016, 10125020, 15693781, 16200032, 20250040, 31387562, 32400064, 40500080, 62775124, 64800128, 78468905, 81000160, 125550248, 129600256, 156937810, 162000320, 251100496, 313875620, 324000640, 502200992, 627751240, 648001280, 1004401984, 1255502480, 2008803968, 2511004960, 4017607936, 5022009920, 10044019840, 20088039680]

約数ペア:

[(1, 20088039680), (2, 10044019840), (4, 5022009920), (5, 4017607936), (8, 2511004960), (10, 2008803968), (16, 1255502480), (20, 1004401984), (31, 648001280), (32, 627751240), (40, 502200992), (62, 324000640), (64, 313875620), (80, 251100496), (124, 162000320), (128, 156937810), (155, 129600256), (160, 125550248), (248, 81000160), (256, 78468905), (310, 64800128), (320, 62775124), (496, 40500080), (620, 32400064), (640, 31387562), (992, 20250040), (1240, 16200032), (1280, 15693781), (1984, 10125020), (2480, 8100016), (3968, 5062510), (4960, 4050008), (7936, 2531255), (9920, 2025004), (19840, 1012502), (39680, 506251)]