12811475

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 16873920

約数和(自身を除く): 4062445

約数列:

[1, 5, 25, 29, 41, 145, 205, 431, 725, 1025, 1189, 2155, 5945, 10775, 12499, 17671, 29725, 62495, 88355, 312475, 441775, 512459, 2562295, 12811475]

約数ペア:

[(1, 12811475), (5, 2562295), (25, 512459), (29, 441775), (41, 312475), (145, 88355), (205, 62495), (431, 29725), (725, 17671), (1025, 12499), (1189, 10775), (2155, 5945)]