21505635

素因数分解:

$3^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{661}}^1$

素因数の和:916

約数の個数: 32

約数和(自身を含む): 38448960

約数和(自身を除く): 16943325

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 241, 661, 723, 1205, 1983, 2169, 3305, 3615, 5949, 6507, 9915, 10845, 17847, 29745, 32535, 89235, 159301, 477903, 796505, 1433709, 2389515, 4301127, 7168545, 21505635]

約数ペア:

[(1, 21505635), (3, 7168545), (5, 4301127), (9, 2389515), (15, 1433709), (27, 796505), (45, 477903), (135, 159301), (241, 89235), (661, 32535), (723, 29745), (1205, 17847), (1983, 10845), (2169, 9915), (3305, 6507), (3615, 5949)]