20418561

素因数分解:

$3^6\times {\mathrm{37}}^1\times {\mathrm{757}}^1$

素因数の和:812

約数の個数: 28

約数和(自身を含む): 31482772

約数和(自身を除く): 11064211

約数列:

[1, 3, 9, 27, 37, 81, 111, 243, 333, 729, 757, 999, 2271, 2997, 6813, 8991, 20439, 26973, 28009, 61317, 84027, 183951, 252081, 551853, 756243, 2268729, 6806187, 20418561]

約数ペア:

[(1, 20418561), (3, 6806187), (9, 2268729), (27, 756243), (37, 551853), (81, 252081), (111, 183951), (243, 84027), (333, 61317), (729, 28009), (757, 26973), (999, 20439), (2271, 8991), (2997, 6813)]