20391045

素因数分解:

$3^1\times 5^1\times {\mathrm{353}}^1\times {\mathrm{3851}}^1$

素因数の和:4212

約数の個数: 16

約数和(自身を含む): 32726592

約数和(自身を除く): 12335547

約数列:

[1, 3, 5, 15, 353, 1059, 1765, 3851, 5295, 11553, 19255, 57765, 1359403, 4078209, 6797015, 20391045]

約数ペア:

[(1, 20391045), (3, 6797015), (5, 4078209), (15, 1359403), (353, 57765), (1059, 19255), (1765, 11553), (3851, 5295)]