51347440

素因数分解:

$2^4\times 5^1\times {\mathrm{641843}}^1$

素因数の和:641856

約数の個数: 20

約数和(自身を含む): 119382984

約数和(自身を除く): 68035544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641843, 1283686, 2567372, 3209215, 5134744, 6418430, 10269488, 12836860, 25673720, 51347440]

約数ペア:

[(1, 51347440), (2, 25673720), (4, 12836860), (5, 10269488), (8, 6418430), (10, 5134744), (16, 3209215), (20, 2567372), (40, 1283686), (80, 641843)]