20802555

素因数分解:

$3^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{691}}^1$

素因数の和:928

約数の個数: 32

約数和(自身を含む): 37201920

約数和(自身を除く): 16399365

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 223, 669, 691, 1115, 2007, 2073, 3345, 3455, 6021, 6219, 10035, 10365, 18657, 30105, 31095, 93285, 154093, 462279, 770465, 1386837, 2311395, 4160511, 6934185, 20802555]

約数ペア:

[(1, 20802555), (3, 6934185), (5, 4160511), (9, 2311395), (15, 1386837), (27, 770465), (45, 462279), (135, 154093), (223, 93285), (669, 31095), (691, 30105), (1115, 18657), (2007, 10365), (2073, 10035), (3345, 6219), (3455, 6021)]