20904765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2237}}^1$

素因数の和:2341

約数の個数: 32

約数和(自身を含む): 38672640

約数和(自身を除く): 17767875

約数列:

[1, 3, 5, 7, 15, 21, 35, 89, 105, 267, 445, 623, 1335, 1869, 2237, 3115, 6711, 9345, 11185, 15659, 33555, 46977, 78295, 199093, 234885, 597279, 995465, 1393651, 2986395, 4180953, 6968255, 20904765]

約数ペア:

[(1, 20904765), (3, 6968255), (5, 4180953), (7, 2986395), (15, 1393651), (21, 995465), (35, 597279), (89, 234885), (105, 199093), (267, 78295), (445, 46977), (623, 33555), (1335, 15659), (1869, 11185), (2237, 9345), (3115, 6711)]