20556040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3449}}^1$

素因数の和:3609

約数の個数: 32

約数和(自身を含む): 46575000

約数和(自身を除く): 26018960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3449, 5960, 6898, 13796, 17245, 27592, 34490, 68980, 137960, 513901, 1027802, 2055604, 2569505, 4111208, 5139010, 10278020, 20556040]

約数ペア:

[(1, 20556040), (2, 10278020), (4, 5139010), (5, 4111208), (8, 2569505), (10, 2055604), (20, 1027802), (40, 513901), (149, 137960), (298, 68980), (596, 34490), (745, 27592), (1192, 17245), (1490, 13796), (2980, 6898), (3449, 5960)]