20908545

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28447}}^1$

素因数の和:28469

約数の個数: 24

約数和(自身を含む): 38916864

約数和(自身を除く): 18008319

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28447, 85341, 142235, 199129, 426705, 597387, 995645, 1393903, 2986935, 4181709, 6969515, 20908545]

約数ペア:

[(1, 20908545), (3, 6969515), (5, 4181709), (7, 2986935), (15, 1393903), (21, 995645), (35, 597387), (49, 426705), (105, 199129), (147, 142235), (245, 85341), (735, 28447)]