21608852

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1811}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 40081440

約数和(自身を除く): 18472588

約数列:

[1, 2, 4, 19, 38, 76, 157, 314, 628, 1811, 2983, 3622, 5966, 7244, 11932, 34409, 68818, 137636, 284327, 568654, 1137308, 5402213, 10804426, 21608852]

約数ペア:

[(1, 21608852), (2, 10804426), (4, 5402213), (19, 1137308), (38, 568654), (76, 284327), (157, 137636), (314, 68818), (628, 34409), (1811, 11932), (2983, 7244), (3622, 5966)]