7200009

素因数分解:

$3^4\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:978

約数の個数: 20

約数和(自身を含む): 10872576

約数和(自身を除く): 3672567

約数列:

[1, 3, 9, 27, 81, 103, 309, 863, 927, 2589, 2781, 7767, 8343, 23301, 69903, 88889, 266667, 800001, 2400003, 7200009]

約数ペア:

[(1, 7200009), (3, 2400003), (9, 800001), (27, 266667), (81, 88889), (103, 69903), (309, 23301), (863, 8343), (927, 7767), (2589, 2781)]