20353809

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{15889}}^1$

素因数の和:15960

約数の個数: 16

約数和(自身を含む): 31525760

約数和(自身を除く): 11171951

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 15889, 47667, 111223, 333669, 969229, 2907687, 6784603, 20353809]

約数ペア:

[(1, 20353809), (3, 6784603), (7, 2907687), (21, 969229), (61, 333669), (183, 111223), (427, 47667), (1281, 15889)]