21939915

素因数分解:

$3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{8081}}^1$

素因数の和:8270

約数の個数: 16

約数和(自身を含む): 35302176

約数和(自身を除く): 13362261

約数列:

[1, 3, 5, 15, 181, 543, 905, 2715, 8081, 24243, 40405, 121215, 1462661, 4387983, 7313305, 21939915]

約数ペア:

[(1, 21939915), (3, 7313305), (5, 4387983), (15, 1462661), (181, 121215), (543, 40405), (905, 24243), (2715, 8081)]