20502775

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 26810784

約数和(自身を除く): 6308009

約数列:

[1, 5, 23, 25, 115, 181, 197, 575, 905, 985, 4163, 4525, 4531, 4925, 20815, 22655, 35657, 104075, 113275, 178285, 820111, 891425, 4100555, 20502775]

約数ペア:

[(1, 20502775), (5, 4100555), (23, 891425), (25, 820111), (115, 178285), (181, 113275), (197, 104075), (575, 35657), (905, 22655), (985, 20815), (4163, 4925), (4525, 4531)]