31395231

素因数分解:

$3^2\times 7^2\times {\mathrm{71191}}^1$

素因数の和:71211

約数の個数: 18

約数和(自身を含む): 52753272

約数和(自身を除く): 21358041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 71191, 213573, 498337, 640719, 1495011, 3488359, 4485033, 10465077, 31395231]

約数ペア:

[(1, 31395231), (3, 10465077), (7, 4485033), (9, 3488359), (21, 1495011), (49, 640719), (63, 498337), (147, 213573), (441, 71191)]