21965684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{1151}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 41545728

約数和(自身を除く): 19580044

約数列:

[1, 2, 4, 13, 26, 52, 367, 734, 1151, 1468, 2302, 4604, 4771, 9542, 14963, 19084, 29926, 59852, 422417, 844834, 1689668, 5491421, 10982842, 21965684]

約数ペア:

[(1, 21965684), (2, 10982842), (4, 5491421), (13, 1689668), (26, 844834), (52, 422417), (367, 59852), (734, 29926), (1151, 19084), (1468, 14963), (2302, 9542), (4604, 4771)]