20968888

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154183}}^1$

素因数の和:154206

約数の個数: 16

約数和(自身を含む): 41629680

約数和(自身を除く): 20660792

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154183, 308366, 616732, 1233464, 2621111, 5242222, 10484444, 20968888]

約数ペア:

[(1, 20968888), (2, 10484444), (4, 5242222), (8, 2621111), (17, 1233464), (34, 616732), (68, 308366), (136, 154183)]