7647777

素因数分解:

$3^4\times {\mathrm{263}}^1\times {\mathrm{359}}^1$

素因数の和:634

約数の個数: 20

約数和(自身を含む): 11499840

約数和(自身を除く): 3852063

約数列:

[1, 3, 9, 27, 81, 263, 359, 789, 1077, 2367, 3231, 7101, 9693, 21303, 29079, 94417, 283251, 849753, 2549259, 7647777]

約数ペア:

[(1, 7647777), (3, 2549259), (9, 849753), (27, 283251), (81, 94417), (263, 29079), (359, 21303), (789, 9693), (1077, 7101), (2367, 3231)]