20993995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{911}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 27578880

約数和(自身を除く): 6584885

約数列:

[1, 5, 11, 55, 419, 911, 2095, 4555, 4609, 10021, 23045, 50105, 381709, 1908545, 4198799, 20993995]

約数ペア:

[(1, 20993995), (5, 4198799), (11, 1908545), (55, 381709), (419, 50105), (911, 23045), (2095, 10021), (4555, 4609)]