21265010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4421}}^1$

素因数の和:4478

約数の個数: 32

約数和(自身を含む): 42345072

約数和(自身を除く): 21080062

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4421, 4810, 8842, 22105, 44210, 57473, 114946, 163577, 287365, 327154, 574730, 817885, 1635770, 2126501, 4253002, 10632505, 21265010]

約数ペア:

[(1, 21265010), (2, 10632505), (5, 4253002), (10, 2126501), (13, 1635770), (26, 817885), (37, 574730), (65, 327154), (74, 287365), (130, 163577), (185, 114946), (370, 57473), (481, 44210), (962, 22105), (2405, 8842), (4421, 4810)]