16620309

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{6619}}^1$

素因数の和:6662

約数の個数: 20

約数和(自身を含む): 25632640

約数和(自身を除く): 9012331

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 6619, 19857, 59571, 178713, 205189, 536139, 615567, 1846701, 5540103, 16620309]

約数ペア:

[(1, 16620309), (3, 5540103), (9, 1846701), (27, 615567), (31, 536139), (81, 205189), (93, 178713), (279, 59571), (837, 19857), (2511, 6619)]