31211020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{15451}}^1$

素因数の和:15561

約数の個数: 24

約数和(自身を含む): 66196368

約数和(自身を除く): 34985348

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 15451, 30902, 61804, 77255, 154510, 309020, 1560551, 3121102, 6242204, 7802755, 15605510, 31211020]

約数ペア:

[(1, 31211020), (2, 15605510), (4, 7802755), (5, 6242204), (10, 3121102), (20, 1560551), (101, 309020), (202, 154510), (404, 77255), (505, 61804), (1010, 30902), (2020, 15451)]