20491005

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31769}}^1$

素因数の和:31820

約数の個数: 16

約数和(自身を含む): 33549120

約数和(自身を除く): 13058115

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31769, 95307, 158845, 476535, 1366067, 4098201, 6830335, 20491005]

約数ペア:

[(1, 20491005), (3, 6830335), (5, 4098201), (15, 1366067), (43, 476535), (129, 158845), (215, 95307), (645, 31769)]