30886420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21751}}^1$

素因数の和:21831

約数の個数: 24

約数和(自身を含む): 65778048

約数和(自身を除く): 34891628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21751, 43502, 87004, 108755, 217510, 435020, 1544321, 3088642, 6177284, 7721605, 15443210, 30886420]

約数ペア:

[(1, 30886420), (2, 15443210), (4, 7721605), (5, 6177284), (10, 3088642), (20, 1544321), (71, 435020), (142, 217510), (284, 108755), (355, 87004), (710, 43502), (1420, 21751)]