64551920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26029}}^1$

素因数の和:26073

約数の個数: 40

約数和(自身を含む): 154930560

約数和(自身を除く): 90378640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26029, 52058, 104116, 130145, 208232, 260290, 416464, 520580, 806899, 1041160, 1613798, 2082320, 3227596, 4034495, 6455192, 8068990, 12910384, 16137980, 32275960, 64551920]

約数ペア:

[(1, 64551920), (2, 32275960), (4, 16137980), (5, 12910384), (8, 8068990), (10, 6455192), (16, 4034495), (20, 3227596), (31, 2082320), (40, 1613798), (62, 1041160), (80, 806899), (124, 520580), (155, 416464), (248, 260290), (310, 208232), (496, 130145), (620, 104116), (1240, 52058), (2480, 26029)]