20857779

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{599}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 10311021

約数列:

[1, 3, 9, 53, 73, 159, 219, 477, 599, 657, 1797, 3869, 5391, 11607, 31747, 34821, 43727, 95241, 131181, 285723, 393543, 2317531, 6952593, 20857779]

約数ペア:

[(1, 20857779), (3, 6952593), (9, 2317531), (53, 393543), (73, 285723), (159, 131181), (219, 95241), (477, 43727), (599, 34821), (657, 31747), (1797, 11607), (3869, 5391)]