13215879

素因数分解:

$3^4\times {\mathrm{167}}^1\times {\mathrm{977}}^1$

素因数の和:1156

約数の個数: 20

約数和(自身を含む): 19880784

約数和(自身を除く): 6664905

約数列:

[1, 3, 9, 27, 81, 167, 501, 977, 1503, 2931, 4509, 8793, 13527, 26379, 79137, 163159, 489477, 1468431, 4405293, 13215879]

約数ペア:

[(1, 13215879), (3, 4405293), (9, 1468431), (27, 489477), (81, 163159), (167, 79137), (501, 26379), (977, 13527), (1503, 8793), (2931, 4509)]