28403725

素因数分解:

$5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1607}}^1$

素因数の和:1725

約数の個数: 24

約数和(自身を含む): 40675968

約数和(自身を除く): 12272243

約数列:

[1, 5, 7, 25, 35, 101, 175, 505, 707, 1607, 2525, 3535, 8035, 11249, 17675, 40175, 56245, 162307, 281225, 811535, 1136149, 4057675, 5680745, 28403725]

約数ペア:

[(1, 28403725), (5, 5680745), (7, 4057675), (25, 1136149), (35, 811535), (101, 281225), (175, 162307), (505, 56245), (707, 40175), (1607, 17675), (2525, 11249), (3535, 8035)]