20990315

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{383}}^1$

素因数の和:598

約数の個数: 16

約数和(自身を含む): 25740288

約数和(自身を除く): 4749973

約数列:

[1, 5, 97, 113, 383, 485, 565, 1915, 10961, 37151, 43279, 54805, 185755, 216395, 4198063, 20990315]

約数ペア:

[(1, 20990315), (5, 4198063), (97, 216395), (113, 185755), (383, 54805), (485, 43279), (565, 37151), (1915, 10961)]