20797231

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{509}}^1$

素因数の和:978

約数の個数: 16

約数和(自身を含む): 25704000

約数和(自身を除く): 4906769

約数列:

[1, 7, 13, 91, 449, 509, 3143, 3563, 5837, 6617, 40859, 46319, 228541, 1599787, 2971033, 20797231]

約数ペア:

[(1, 20797231), (7, 2971033), (13, 1599787), (91, 228541), (449, 46319), (509, 40859), (3143, 6617), (3563, 5837)]