18968965

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1523}}^1$

素因数の和:1628

約数の個数: 16

約数和(自身を含む): 23701248

約数和(自身を除く): 4732283

約数列:

[1, 5, 47, 53, 235, 265, 1523, 2491, 7615, 12455, 71581, 80719, 357905, 403595, 3793793, 18968965]

約数ペア:

[(1, 18968965), (5, 3793793), (47, 403595), (53, 357905), (235, 80719), (265, 71581), (1523, 12455), (2491, 7615)]