20989508

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{3833}}^1$

素因数の和:3911

約数の個数: 18

約数和(自身を含む): 37761066

約数和(自身を除く): 16771558

約数列:

[1, 2, 4, 37, 74, 148, 1369, 2738, 3833, 5476, 7666, 15332, 141821, 283642, 567284, 5247377, 10494754, 20989508]

約数ペア:

[(1, 20989508), (2, 10494754), (4, 5247377), (37, 567284), (74, 283642), (148, 141821), (1369, 15332), (2738, 7666), (3833, 5476)]