31290021

素因数分解:

$3^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{1597}}^1$

素因数の和:1921

約数の個数: 24

約数和(自身を含む): 51851904

約数和(自身を除く): 20561883

約数列:

[1, 3, 7, 9, 21, 63, 311, 933, 1597, 2177, 2799, 4791, 6531, 11179, 14373, 19593, 33537, 100611, 496667, 1490001, 3476669, 4470003, 10430007, 31290021]

約数ペア:

[(1, 31290021), (3, 10430007), (7, 4470003), (9, 3476669), (21, 1490001), (63, 496667), (311, 100611), (933, 33537), (1597, 19593), (2177, 14373), (2799, 11179), (4791, 6531)]