20355615

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64621}}^1$

素因数の和:64639

約数の個数: 24

約数和(自身を含む): 40324128

約数和(自身を除く): 19968513

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64621, 193863, 323105, 452347, 581589, 969315, 1357041, 2261735, 2907945, 4071123, 6785205, 20355615]

約数ペア:

[(1, 20355615), (3, 6785205), (5, 4071123), (7, 2907945), (9, 2261735), (15, 1357041), (21, 969315), (35, 581589), (45, 452347), (63, 323105), (105, 193863), (315, 64621)]