16840953

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{809}}^1$

素因数の和:1078

約数の個数: 20

約数和(自身を含む): 25286580

約数和(自身を除く): 8445627

約数列:

[1, 3, 9, 27, 81, 257, 771, 809, 2313, 2427, 6939, 7281, 20817, 21843, 65529, 207913, 623739, 1871217, 5613651, 16840953]

約数ペア:

[(1, 16840953), (3, 5613651), (9, 1871217), (27, 623739), (81, 207913), (257, 65529), (771, 21843), (809, 20817), (2313, 7281), (2427, 6939)]