18814521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{13259}}^1$

素因数の和:13316

約数の個数: 16

約数和(自身を含む): 28005120

約数和(自身を除く): 9190599

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 13259, 39777, 145849, 437547, 570137, 1710411, 6271507, 18814521]

約数ペア:

[(1, 18814521), (3, 6271507), (11, 1710411), (33, 570137), (43, 437547), (129, 145849), (473, 39777), (1419, 13259)]