21995245

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{991}}^1$

素因数の和:1212

約数の個数: 16

約数和(自身を含む): 27712512

約数和(自身を除く): 5717267

約数列:

[1, 5, 23, 115, 193, 965, 991, 4439, 4955, 22195, 22793, 113965, 191263, 956315, 4399049, 21995245]

約数ペア:

[(1, 21995245), (5, 4399049), (23, 956315), (115, 191263), (193, 113965), (965, 22793), (991, 22195), (4439, 4955)]