19818980

素因数分解:

$2^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{4253}}^1$

素因数の和:4495

約数の個数: 24

約数和(自身を含む): 41808312

約数和(自身を除く): 21989332

約数列:

[1, 2, 4, 5, 10, 20, 233, 466, 932, 1165, 2330, 4253, 4660, 8506, 17012, 21265, 42530, 85060, 990949, 1981898, 3963796, 4954745, 9909490, 19818980]

約数ペア:

[(1, 19818980), (2, 9909490), (4, 4954745), (5, 3963796), (10, 1981898), (20, 990949), (233, 85060), (466, 42530), (932, 21265), (1165, 17012), (2330, 8506), (4253, 4660)]