21076785

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4297}}^1$

素因数の和:4417

約数の個数: 24

約数和(自身を含む): 36876840

約数和(自身を除く): 15800055

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4297, 4905, 12891, 21485, 38673, 64455, 193365, 468373, 1405119, 2341865, 4215357, 7025595, 21076785]

約数ペア:

[(1, 21076785), (3, 7025595), (5, 4215357), (9, 2341865), (15, 1405119), (45, 468373), (109, 193365), (327, 64455), (545, 38673), (981, 21485), (1635, 12891), (4297, 4905)]