201581721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47353}}^1$

素因数の和:47413

約数の個数: 24

約数和(自身を含む): 325037856

約数和(自身を除く): 123456135

約数列:

[1, 3, 9, 11, 33, 43, 99, 129, 387, 473, 1419, 4257, 47353, 142059, 426177, 520883, 1562649, 2036179, 4687947, 6108537, 18325611, 22397969, 67193907, 201581721]

約数ペア:

[(1, 201581721), (3, 67193907), (9, 22397969), (11, 18325611), (33, 6108537), (43, 4687947), (99, 2036179), (129, 1562649), (387, 520883), (473, 426177), (1419, 142059), (4257, 47353)]