156720789

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{2389}}^1$

素因数の和:2629

約数の個数: 24

約数和(自身を含む): 233770680

約数和(自身を除く): 77049891

約数列:

[1, 3, 9, 37, 111, 197, 333, 591, 1773, 2389, 7167, 7289, 21501, 21867, 65601, 88393, 265179, 470633, 795537, 1411899, 4235697, 17413421, 52240263, 156720789]

約数ペア:

[(1, 156720789), (3, 52240263), (9, 17413421), (37, 4235697), (111, 1411899), (197, 795537), (333, 470633), (591, 265179), (1773, 88393), (2389, 65601), (7167, 21867), (7289, 21501)]