20813025

素因数分解:

$3^1\times 5^2\times {\mathrm{359}}^1\times {\mathrm{773}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 34551360

約数和(自身を除く): 13738335

約数列:

[1, 3, 5, 15, 25, 75, 359, 773, 1077, 1795, 2319, 3865, 5385, 8975, 11595, 19325, 26925, 57975, 277507, 832521, 1387535, 4162605, 6937675, 20813025]

約数ペア:

[(1, 20813025), (3, 6937675), (5, 4162605), (15, 1387535), (25, 832521), (75, 277507), (359, 57975), (773, 26925), (1077, 19325), (1795, 11595), (2319, 8975), (3865, 5385)]