81440489

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 95157720

約数和(自身を除く): 13717231

約数列:

[1, 13, 17, 53, 221, 289, 409, 689, 901, 3757, 5317, 6953, 11713, 15317, 21677, 90389, 118201, 199121, 281801, 368509, 1536613, 4790617, 6264653, 81440489]

約数ペア:

[(1, 81440489), (13, 6264653), (17, 4790617), (53, 1536613), (221, 368509), (289, 281801), (409, 199121), (689, 118201), (901, 90389), (3757, 21677), (5317, 15317), (6953, 11713)]