21558704

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25423}}^1$

素因数の和:25484

約数の個数: 20

約数和(自身を含む): 42559776

約数和(自身を除く): 21001072

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25423, 50846, 101692, 203384, 406768, 1347419, 2694838, 5389676, 10779352, 21558704]

約数ペア:

[(1, 21558704), (2, 10779352), (4, 5389676), (8, 2694838), (16, 1347419), (53, 406768), (106, 203384), (212, 101692), (424, 50846), (848, 25423)]