20517891

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{4931}}^1$

素因数の和:5026

約数の個数: 16

約数和(自身を含む): 29197440

約数和(自身を除く): 8679549

約数列:

[1, 3, 19, 57, 73, 219, 1387, 4161, 4931, 14793, 93689, 281067, 359963, 1079889, 6839297, 20517891]

約数ペア:

[(1, 20517891), (3, 6839297), (19, 1079889), (57, 359963), (73, 281067), (219, 93689), (1387, 14793), (4161, 4931)]