31257620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{25621}}^1$

素因数の和:25691

約数の個数: 24

約数和(自身を含む): 66719688

約数和(自身を除く): 35462068

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 25621, 51242, 102484, 128105, 256210, 512420, 1562881, 3125762, 6251524, 7814405, 15628810, 31257620]

約数ペア:

[(1, 31257620), (2, 15628810), (4, 7814405), (5, 6251524), (10, 3125762), (20, 1562881), (61, 512420), (122, 256210), (244, 128105), (305, 102484), (610, 51242), (1220, 25621)]