20729765

素因数分解:

$5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4261}}^1$

素因数の和:4412

約数の個数: 16

約数和(自身を含む): 28640640

約数和(自身を除く): 7910875

約数列:

[1, 5, 7, 35, 139, 695, 973, 4261, 4865, 21305, 29827, 149135, 592279, 2961395, 4145953, 20729765]

約数ペア:

[(1, 20729765), (5, 4145953), (7, 2961395), (35, 592279), (139, 149135), (695, 29827), (973, 21305), (4261, 4865)]