31211397

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1009}}^1$

素因数の和:1513

約数の個数: 24

約数和(自身を含む): 51679680

約数和(自身を除く): 20468283

約数列:

[1, 3, 7, 9, 21, 63, 491, 1009, 1473, 3027, 3437, 4419, 7063, 9081, 10311, 21189, 30933, 63567, 495419, 1486257, 3467933, 4458771, 10403799, 31211397]

約数ペア:

[(1, 31211397), (3, 10403799), (7, 4458771), (9, 3467933), (21, 1486257), (63, 495419), (491, 63567), (1009, 30933), (1473, 21189), (3027, 10311), (3437, 9081), (4419, 7063)]