20440208

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{1993}}^1$

素因数の和:2642

約数の個数: 20

約数和(自身を含む): 39684588

約数和(自身を除く): 19244380

約数列:

[1, 2, 4, 8, 16, 641, 1282, 1993, 2564, 3986, 5128, 7972, 10256, 15944, 31888, 1277513, 2555026, 5110052, 10220104, 20440208]

約数ペア:

[(1, 20440208), (2, 10220104), (4, 5110052), (8, 2555026), (16, 1277513), (641, 31888), (1282, 15944), (1993, 10256), (2564, 7972), (3986, 5128)]