21486868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{1151}}^1$

素因数の和:1527

約数の個数: 24

約数和(自身を含む): 40642560

約数和(自身を除く): 19155692

約数列:

[1, 2, 4, 13, 26, 52, 359, 718, 1151, 1436, 2302, 4604, 4667, 9334, 14963, 18668, 29926, 59852, 413209, 826418, 1652836, 5371717, 10743434, 21486868]

約数ペア:

[(1, 21486868), (2, 10743434), (4, 5371717), (13, 1652836), (26, 826418), (52, 413209), (359, 59852), (718, 29926), (1151, 18668), (1436, 14963), (2302, 9334), (4604, 4667)]