20858008

素因数分解:

$2^3\times {\mathrm{239}}^1\times {\mathrm{10909}}^1$

素因数の和:11154

約数の個数: 16

約数和(自身を含む): 39276000

約数和(自身を除く): 18417992

約数列:

[1, 2, 4, 8, 239, 478, 956, 1912, 10909, 21818, 43636, 87272, 2607251, 5214502, 10429004, 20858008]

約数ペア:

[(1, 20858008), (2, 10429004), (4, 5214502), (8, 2607251), (239, 87272), (478, 43636), (956, 21818), (1912, 10909)]