421640690

素因数分解:

$2^1\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{26839}}^1$

素因数の和:28417

約数の個数: 16

約数和(自身を含む): 759464640

約数和(自身を除く): 337823950

約数列:

[1, 2, 5, 10, 1571, 3142, 7855, 15710, 26839, 53678, 134195, 268390, 42164069, 84328138, 210820345, 421640690]

約数ペア:

[(1, 421640690), (2, 210820345), (5, 84328138), (10, 42164069), (1571, 268390), (3142, 134195), (7855, 53678), (15710, 26839)]