51550160

素因数分解:

$2^4\times 5^1\times {\mathrm{644377}}^1$

素因数の和:644390

約数の個数: 20

約数和(自身を含む): 119854308

約数和(自身を除く): 68304148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644377, 1288754, 2577508, 3221885, 5155016, 6443770, 10310032, 12887540, 25775080, 51550160]

約数ペア:

[(1, 51550160), (2, 25775080), (4, 12887540), (5, 10310032), (8, 6443770), (10, 5155016), (16, 3221885), (20, 2577508), (40, 1288754), (80, 644377)]