21058376

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154841}}^1$

素因数の和:154864

約数の個数: 16

約数和(自身を含む): 41807340

約数和(自身を除く): 20748964

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154841, 309682, 619364, 1238728, 2632297, 5264594, 10529188, 21058376]

約数ペア:

[(1, 21058376), (2, 10529188), (4, 5264594), (8, 2632297), (17, 1238728), (34, 619364), (68, 309682), (136, 154841)]