20691879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1231}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 29804544

約数和(自身を除く): 9112665

約数列:

[1, 3, 13, 39, 431, 1231, 1293, 3693, 5603, 16003, 16809, 48009, 530561, 1591683, 6897293, 20691879]

約数ペア:

[(1, 20691879), (3, 6897293), (13, 1591683), (39, 530561), (431, 48009), (1231, 16809), (1293, 16003), (3693, 5603)]