2021025735

素因数分解:

$3^4\times 5^1\times {\mathrm{4990187}}^1$

素因数の和:4990204

約数の個数: 20

約数和(自身を含む): 3622876488

約数和(自身を除く): 1601850753

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4990187, 14970561, 24950935, 44911683, 74852805, 134735049, 224558415, 404205147, 673675245, 2021025735]

約数ペア:

[(1, 2021025735), (3, 673675245), (5, 404205147), (9, 224558415), (15, 134735049), (27, 74852805), (45, 44911683), (81, 24950935), (135, 14970561), (405, 4990187)]