12784401

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{661}}^1$

素因数の和:981

約数の個数: 24

約数和(自身を含む): 21205184

約数和(自身を除く): 8420783

約数列:

[1, 3, 7, 9, 21, 63, 307, 661, 921, 1983, 2149, 2763, 4627, 5949, 6447, 13881, 19341, 41643, 202927, 608781, 1420489, 1826343, 4261467, 12784401]

約数ペア:

[(1, 12784401), (3, 4261467), (7, 1826343), (9, 1420489), (21, 608781), (63, 202927), (307, 41643), (661, 19341), (921, 13881), (1983, 6447), (2149, 5949), (2763, 4627)]