21118605

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13669}}^1$

素因数の和:13780

約数の個数: 16

約数和(自身を含む): 34120320

約数和(自身を除く): 13001715

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13669, 41007, 68345, 205035, 1407907, 4223721, 7039535, 21118605]

約数ペア:

[(1, 21118605), (3, 7039535), (5, 4223721), (15, 1407907), (103, 205035), (309, 68345), (515, 41007), (1545, 13669)]