21418220

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1747}}^1$

素因数の和:2369

約数の個数: 24

約数和(自身を含む): 45077424

約数和(自身を除く): 23659204

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1747, 2452, 3065, 3494, 6130, 6988, 8735, 12260, 17470, 34940, 1070911, 2141822, 4283644, 5354555, 10709110, 21418220]

約数ペア:

[(1, 21418220), (2, 10709110), (4, 5354555), (5, 4283644), (10, 2141822), (20, 1070911), (613, 34940), (1226, 17470), (1747, 12260), (2452, 8735), (3065, 6988), (3494, 6130)]