18638781

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{28631}}^1$

素因数の和:28672

約数の個数: 16

約数和(自身を含む): 29319168

約数和(自身を除く): 10680387

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 28631, 85893, 200417, 601251, 887561, 2662683, 6212927, 18638781]

約数ペア:

[(1, 18638781), (3, 6212927), (7, 2662683), (21, 887561), (31, 601251), (93, 200417), (217, 85893), (651, 28631)]