21185372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7687}}^1$

素因数の和:7757

約数の個数: 24

約数和(自身を含む): 40684896

約数和(自身を除く): 19499524

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7687, 15374, 30748, 99931, 199862, 399724, 407411, 814822, 1629644, 5296343, 10592686, 21185372]

約数ペア:

[(1, 21185372), (2, 10592686), (4, 5296343), (13, 1629644), (26, 814822), (52, 407411), (53, 399724), (106, 199862), (212, 99931), (689, 30748), (1378, 15374), (2756, 7687)]