18699723

素因数分解:

$3^2\times 7^2\times {\mathrm{42403}}^1$

素因数の和:42423

約数の個数: 18

約数和(自身を含む): 31421364

約数和(自身を除く): 12721641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42403, 127209, 296821, 381627, 890463, 2077747, 2671389, 6233241, 18699723]

約数ペア:

[(1, 18699723), (3, 6233241), (7, 2671389), (9, 2077747), (21, 890463), (49, 381627), (63, 296821), (147, 127209), (441, 42403)]