20129660

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{2017}}^1$

素因数の和:2525

約数の個数: 24

約数和(自身を含む): 42378000

約数和(自身を除く): 22248340

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2017, 2495, 4034, 4990, 8068, 9980, 10085, 20170, 40340, 1006483, 2012966, 4025932, 5032415, 10064830, 20129660]

約数ペア:

[(1, 20129660), (2, 10064830), (4, 5032415), (5, 4025932), (10, 2012966), (20, 1006483), (499, 40340), (998, 20170), (1996, 10085), (2017, 9980), (2495, 8068), (4034, 4990)]