21330376

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156841}}^1$

素因数の和:156864

約数の個数: 16

約数和(自身を含む): 42347340

約数和(自身を除く): 21016964

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156841, 313682, 627364, 1254728, 2666297, 5332594, 10665188, 21330376]

約数ペア:

[(1, 21330376), (2, 10665188), (4, 5332594), (8, 2666297), (17, 1254728), (34, 627364), (68, 313682), (136, 156841)]