21265190

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{40123}}^1$

素因数の和:40183

約数の個数: 16

約数和(自身を含む): 39000528

約数和(自身を除く): 17735338

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 40123, 80246, 200615, 401230, 2126519, 4253038, 10632595, 21265190]

約数ペア:

[(1, 21265190), (2, 10632595), (5, 4253038), (10, 2126519), (53, 401230), (106, 200615), (265, 80246), (530, 40123)]