21556490

素因数分解:

$2^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4801}}^1$

素因数の和:5257

約数の個数: 16

約数和(自身を含む): 38896200

約数和(自身を除く): 17339710

約数列:

[1, 2, 5, 10, 449, 898, 2245, 4490, 4801, 9602, 24005, 48010, 2155649, 4311298, 10778245, 21556490]

約数ペア:

[(1, 21556490), (2, 10778245), (5, 4311298), (10, 2155649), (449, 48010), (898, 24005), (2245, 9602), (4490, 4801)]