12921820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{22279}}^1$

素因数の和:22317

約数の個数: 24

約数和(自身を含む): 28072800

約数和(自身を除く): 15150980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 22279, 44558, 89116, 111395, 222790, 445580, 646091, 1292182, 2584364, 3230455, 6460910, 12921820]

約数ペア:

[(1, 12921820), (2, 6460910), (4, 3230455), (5, 2584364), (10, 1292182), (20, 646091), (29, 445580), (58, 222790), (116, 111395), (145, 89116), (290, 44558), (580, 22279)]