81635281

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{151}}^1\times {\mathrm{457}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 101917824

約数和(自身を除く): 20282543

約数列:

[1, 7, 13, 91, 151, 169, 457, 1057, 1183, 1963, 3199, 5941, 13741, 25519, 41587, 69007, 77233, 178633, 483049, 540631, 897091, 6279637, 11662183, 81635281]

約数ペア:

[(1, 81635281), (7, 11662183), (13, 6279637), (91, 897091), (151, 540631), (169, 483049), (457, 178633), (1057, 77233), (1183, 69007), (1963, 41587), (3199, 25519), (5941, 13741)]