21421485

素因数分解:

$3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6521}}^1$

素因数の和:6605

約数の個数: 24

約数和(自身を含む): 37644984

約数和(自身を除く): 16223499

約数列:

[1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095, 3285, 6521, 19563, 32605, 58689, 97815, 293445, 476033, 1428099, 2380165, 4284297, 7140495, 21421485]

約数ペア:

[(1, 21421485), (3, 7140495), (5, 4284297), (9, 2380165), (15, 1428099), (45, 476033), (73, 293445), (219, 97815), (365, 58689), (657, 32605), (1095, 19563), (3285, 6521)]