212888979

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{29531}}^1$

素因数の和:29632

約数の個数: 20

約数和(自身を含む): 321603480

約数和(自身を除く): 108714501

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 7209, 29531, 88593, 265779, 797337, 2392011, 2628259, 7884777, 23654331, 70962993, 212888979]

約数ペア:

[(1, 212888979), (3, 70962993), (9, 23654331), (27, 7884777), (81, 2628259), (89, 2392011), (267, 797337), (801, 265779), (2403, 88593), (7209, 29531)]