20928668

素因数分解:

$2^2\times {\mathrm{137}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 37272144

約数和(自身を除く): 16343476

約数列:

[1, 2, 4, 137, 181, 211, 274, 362, 422, 548, 724, 844, 24797, 28907, 38191, 49594, 57814, 76382, 99188, 115628, 152764, 5232167, 10464334, 20928668]

約数ペア:

[(1, 20928668), (2, 10464334), (4, 5232167), (137, 152764), (181, 115628), (211, 99188), (274, 76382), (362, 57814), (422, 49594), (548, 38191), (724, 28907), (844, 24797)]