1971621

素因数分解:

$3^4\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:354

約数の個数: 20

約数和(自身を含む): 2986764

約数和(自身を除く): 1015143

約数列:

[1, 3, 9, 27, 81, 101, 241, 303, 723, 909, 2169, 2727, 6507, 8181, 19521, 24341, 73023, 219069, 657207, 1971621]

約数ペア:

[(1, 1971621), (3, 657207), (9, 219069), (27, 73023), (81, 24341), (101, 19521), (241, 8181), (303, 6507), (723, 2727), (909, 2169)]