21398960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24317}}^1$

素因数の和:24341

約数の個数: 40

約数和(自身を含む): 54277776

約数和(自身を除く): 32878816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24317, 48634, 97268, 121585, 194536, 243170, 267487, 389072, 486340, 534974, 972680, 1069948, 1337435, 1945360, 2139896, 2674870, 4279792, 5349740, 10699480, 21398960]

約数ペア:

[(1, 21398960), (2, 10699480), (4, 5349740), (5, 4279792), (8, 2674870), (10, 2139896), (11, 1945360), (16, 1337435), (20, 1069948), (22, 972680), (40, 534974), (44, 486340), (55, 389072), (80, 267487), (88, 243170), (110, 194536), (176, 121585), (220, 97268), (440, 48634), (880, 24317)]