21052330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12457}}^1$

素因数の和:12490

約数の個数: 24

約数和(自身を含む): 41036652

約数和(自身を除く): 19984322

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12457, 24914, 62285, 124570, 161941, 323882, 809705, 1619410, 2105233, 4210466, 10526165, 21052330]

約数ペア:

[(1, 21052330), (2, 10526165), (5, 4210466), (10, 2105233), (13, 1619410), (26, 809705), (65, 323882), (130, 161941), (169, 124570), (338, 62285), (845, 24914), (1690, 12457)]