20128565

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1\times {\mathrm{457}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 25325568

約数和(自身を除く): 5197003

約数列:

[1, 5, 23, 115, 383, 457, 1915, 2285, 8809, 10511, 44045, 52555, 175031, 875155, 4025713, 20128565]

約数ペア:

[(1, 20128565), (5, 4025713), (23, 875155), (115, 175031), (383, 52555), (457, 44045), (1915, 10511), (2285, 8809)]