17728389

素因数分解:

$3^4\times 7^1\times {\mathrm{31267}}^1$

素因数の和:31286

約数の個数: 20

約数和(自身を含む): 30267424

約数和(自身を除く): 12539035

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 31267, 93801, 218869, 281403, 656607, 844209, 1969821, 2532627, 5909463, 17728389]

約数ペア:

[(1, 17728389), (3, 5909463), (7, 2532627), (9, 1969821), (21, 844209), (27, 656607), (63, 281403), (81, 218869), (189, 93801), (567, 31267)]