18139953

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{967}}^1$

素因数の和:1033

約数の個数: 24

約数和(自身を含む): 26925888

約数和(自身を除く): 8785935

約数列:

[1, 3, 13, 37, 39, 111, 169, 481, 507, 967, 1443, 2901, 6253, 12571, 18759, 35779, 37713, 107337, 163423, 465127, 490269, 1395381, 6046651, 18139953]

約数ペア:

[(1, 18139953), (3, 6046651), (13, 1395381), (37, 490269), (39, 465127), (111, 163423), (169, 107337), (481, 37713), (507, 35779), (967, 18759), (1443, 12571), (2901, 6253)]