20215485

素因数分解:

$3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1979}}^1$

素因数の和:2217

約数の個数: 24

約数和(自身を含む): 35212320

約数和(自身を除く): 14996835

約数列:

[1, 3, 5, 9, 15, 45, 227, 681, 1135, 1979, 2043, 3405, 5937, 9895, 10215, 17811, 29685, 89055, 449233, 1347699, 2246165, 4043097, 6738495, 20215485]

約数ペア:

[(1, 20215485), (3, 6738495), (5, 4043097), (9, 2246165), (15, 1347699), (45, 449233), (227, 89055), (681, 29685), (1135, 17811), (1979, 10215), (2043, 9895), (3405, 5937)]