51530480

素因数分解:

$2^4\times 5^1\times {\mathrm{644131}}^1$

素因数の和:644144

約数の個数: 20

約数和(自身を含む): 119808552

約数和(自身を除く): 68278072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644131, 1288262, 2576524, 3220655, 5153048, 6441310, 10306096, 12882620, 25765240, 51530480]

約数ペア:

[(1, 51530480), (2, 25765240), (4, 12882620), (5, 10306096), (8, 6441310), (10, 5153048), (16, 3220655), (20, 2576524), (40, 1288262), (80, 644131)]