2021857205

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{408869}}^1$

素因数の和:408940

約数の個数: 16

約数和(自身を含む): 2590600320

約数和(自身を除く): 568743115

約数列:

[1, 5, 23, 43, 115, 215, 989, 4945, 408869, 2044345, 9403987, 17581367, 47019935, 87906835, 404371441, 2021857205]

約数ペア:

[(1, 2021857205), (5, 404371441), (23, 87906835), (43, 47019935), (115, 17581367), (215, 9403987), (989, 2044345), (4945, 408869)]