21043495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{2437}}^1$

素因数の和:2610

約数の個数: 16

約数和(自身を含む): 27734688

約数和(自身を除く): 6691193

約数列:

[1, 5, 11, 55, 157, 785, 1727, 2437, 8635, 12185, 26807, 134035, 382609, 1913045, 4208699, 21043495]

約数ペア:

[(1, 21043495), (5, 4208699), (11, 1913045), (55, 382609), (157, 134035), (785, 26807), (1727, 12185), (2437, 8635)]