256312329

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{72221}}^1$

素因数の和:72257

約数の個数: 24

約数和(自身を含む): 422932032

約数和(自身を除く): 166619703

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 72221, 216663, 505547, 938873, 1516641, 2816619, 6572111, 12205349, 19716333, 36616047, 85437443, 256312329]

約数ペア:

[(1, 256312329), (3, 85437443), (7, 36616047), (13, 19716333), (21, 12205349), (39, 6572111), (91, 2816619), (169, 1516641), (273, 938873), (507, 505547), (1183, 216663), (3549, 72221)]