51890480

素因数分解:

$2^4\times 5^1\times {\mathrm{648631}}^1$

素因数の和:648644

約数の個数: 20

約数和(自身を含む): 120645552

約数和(自身を除く): 68755072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 648631, 1297262, 2594524, 3243155, 5189048, 6486310, 10378096, 12972620, 25945240, 51890480]

約数ペア:

[(1, 51890480), (2, 25945240), (4, 12972620), (5, 10378096), (8, 6486310), (10, 5189048), (16, 3243155), (20, 2594524), (40, 1297262), (80, 648631)]