51675280

素因数分解:

$2^4\times 5^1\times {\mathrm{645941}}^1$

素因数の和:645954

約数の個数: 20

約数和(自身を含む): 120145212

約数和(自身を除く): 68469932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 645941, 1291882, 2583764, 3229705, 5167528, 6459410, 10335056, 12918820, 25837640, 51675280]

約数ペア:

[(1, 51675280), (2, 25837640), (4, 12918820), (5, 10335056), (8, 6459410), (10, 5167528), (16, 3229705), (20, 2583764), (40, 1291882), (80, 645941)]