19199997

素因数分解:

$3^4\times {\mathrm{293}}^1\times {\mathrm{809}}^1$

素因数の和:1114

約数の個数: 20

約数和(自身を含む): 28814940

約数和(自身を除く): 9614943

約数列:

[1, 3, 9, 27, 81, 293, 809, 879, 2427, 2637, 7281, 7911, 21843, 23733, 65529, 237037, 711111, 2133333, 6399999, 19199997]

約数ペア:

[(1, 19199997), (3, 6399999), (9, 2133333), (27, 711111), (81, 237037), (293, 65529), (809, 23733), (879, 21843), (2427, 7911), (2637, 7281)]