720918009

素因数分解:

$3^3\times 7^1\times {\mathrm{3814381}}^1$

素因数の和:3814397

約数の個数: 16

約数和(自身を含む): 1220602240

約数和(自身を除く): 499684231

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 3814381, 11443143, 26700667, 34329429, 80102001, 102988287, 240306003, 720918009]

約数ペア:

[(1, 720918009), (3, 240306003), (7, 102988287), (9, 80102001), (21, 34329429), (27, 26700667), (63, 11443143), (189, 3814381)]