21194890

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13003}}^1$

素因数の和:13173

約数の個数: 16

約数和(自身を含む): 38387808

約数和(自身を除く): 17192918

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 13003, 26006, 65015, 130030, 2119489, 4238978, 10597445, 21194890]

約数ペア:

[(1, 21194890), (2, 10597445), (5, 4238978), (10, 2119489), (163, 130030), (326, 65015), (815, 26006), (1630, 13003)]