21317420

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2969}}^1$

素因数の和:3337

約数の個数: 24

約数和(自身を含む): 44906400

約数和(自身を除く): 23588980

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 2969, 3590, 5938, 7180, 11876, 14845, 29690, 59380, 1065871, 2131742, 4263484, 5329355, 10658710, 21317420]

約数ペア:

[(1, 21317420), (2, 10658710), (4, 5329355), (5, 4263484), (10, 2131742), (20, 1065871), (359, 59380), (718, 29690), (1436, 14845), (1795, 11876), (2969, 7180), (3590, 5938)]