31386411

素因数分解:

$3^2\times 7^2\times {\mathrm{71171}}^1$

素因数の和:71191

約数の個数: 18

約数和(自身を含む): 52738452

約数和(自身を除く): 21352041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 71171, 213513, 498197, 640539, 1494591, 3487379, 4483773, 10462137, 31386411]

約数ペア:

[(1, 31386411), (3, 10462137), (7, 4483773), (9, 3487379), (21, 1494591), (49, 640539), (63, 498197), (147, 213513), (441, 71171)]