28408731

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{409}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 41416560

約数和(自身を除く): 13007829

約数列:

[1, 3, 13, 39, 137, 169, 409, 411, 507, 1227, 1781, 5317, 5343, 15951, 23153, 56033, 69121, 69459, 168099, 207363, 728429, 2185287, 9469577, 28408731]

約数ペア:

[(1, 28408731), (3, 9469577), (13, 2185287), (39, 728429), (137, 207363), (169, 168099), (409, 69459), (411, 69121), (507, 56033), (1227, 23153), (1781, 15951), (5317, 5343)]