21447080

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5011}}^1$

素因数の和:5129

約数の個数: 32

約数和(自身を含む): 48716640

約数和(自身を除く): 27269560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5011, 10022, 20044, 25055, 40088, 50110, 100220, 200440, 536177, 1072354, 2144708, 2680885, 4289416, 5361770, 10723540, 21447080]

約数ペア:

[(1, 21447080), (2, 10723540), (4, 5361770), (5, 4289416), (8, 2680885), (10, 2144708), (20, 1072354), (40, 536177), (107, 200440), (214, 100220), (428, 50110), (535, 40088), (856, 25055), (1070, 20044), (2140, 10022), (4280, 5011)]