205125515

素因数分解:

$5^1\times 7^2\times {\mathrm{521}}^1\times {\mathrm{1607}}^1$

素因数の和:2147

約数の個数: 24

約数和(自身を含む): 287066592

約数和(自身を除く): 81941077

約数列:

[1, 5, 7, 35, 49, 245, 521, 1607, 2605, 3647, 8035, 11249, 18235, 25529, 56245, 78743, 127645, 393715, 837247, 4186235, 5860729, 29303645, 41025103, 205125515]

約数ペア:

[(1, 205125515), (5, 41025103), (7, 29303645), (35, 5860729), (49, 4186235), (245, 837247), (521, 393715), (1607, 127645), (2605, 78743), (3647, 56245), (8035, 25529), (11249, 18235)]