21897140

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9689}}^1$

素因数の和:9811

約数の個数: 24

約数和(自身を含む): 46395720

約数和(自身を除く): 24498580

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9689, 19378, 38756, 48445, 96890, 193780, 1094857, 2189714, 4379428, 5474285, 10948570, 21897140]

約数ペア:

[(1, 21897140), (2, 10948570), (4, 5474285), (5, 4379428), (10, 2189714), (20, 1094857), (113, 193780), (226, 96890), (452, 48445), (565, 38756), (1130, 19378), (2260, 9689)]