125440820

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{15641}}^1$

素因数の和:16051

約数の個数: 24

約数和(自身を含む): 264099528

約数和(自身を除く): 138658708

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 15641, 31282, 62564, 78205, 156410, 312820, 6272041, 12544082, 25088164, 31360205, 62720410, 125440820]

約数ペア:

[(1, 125440820), (2, 62720410), (4, 31360205), (5, 25088164), (10, 12544082), (20, 6272041), (401, 312820), (802, 156410), (1604, 78205), (2005, 62564), (4010, 31282), (8020, 15641)]