1642225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 2277632

約数和(自身を除く): 635407

約数列:

[1, 5, 13, 25, 31, 65, 155, 163, 325, 403, 775, 815, 2015, 2119, 4075, 5053, 10075, 10595, 25265, 52975, 65689, 126325, 328445, 1642225]

約数ペア:

[(1, 1642225), (5, 328445), (13, 126325), (25, 65689), (31, 52975), (65, 25265), (155, 10595), (163, 10075), (325, 5053), (403, 4075), (775, 2119), (815, 2015)]