21000940472

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20670217}}^1$

素因数の和:20670350

約数の個数: 16

約数和(自身を含む): 39686818560

約数和(自身を除く): 18685878088

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20670217, 41340434, 82680868, 165361736, 2625117559, 5250235118, 10500470236, 21000940472]

約数ペア:

[(1, 21000940472), (2, 10500470236), (4, 5250235118), (8, 2625117559), (127, 165361736), (254, 82680868), (508, 41340434), (1016, 20670217)]