20649465

素因数分解:

$3^3\times 5^1\times {\mathrm{152959}}^1$

素因数の和:152973

約数の個数: 16

約数和(自身を含む): 36710400

約数和(自身を除く): 16060935

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 152959, 458877, 764795, 1376631, 2294385, 4129893, 6883155, 20649465]

約数ペア:

[(1, 20649465), (3, 6883155), (5, 4129893), (9, 2294385), (15, 1376631), (27, 764795), (45, 458877), (135, 152959)]