18217820

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{8513}}^1$

素因数の和:8629

約数の個数: 24

約数和(自身を含む): 38619504

約数和(自身を除く): 20401684

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 8513, 17026, 34052, 42565, 85130, 170260, 910891, 1821782, 3643564, 4554455, 9108910, 18217820]

約数ペア:

[(1, 18217820), (2, 9108910), (4, 4554455), (5, 3643564), (10, 1821782), (20, 910891), (107, 170260), (214, 85130), (428, 42565), (535, 34052), (1070, 17026), (2140, 8513)]