212814621

素因数分解:

$3^4\times {\mathrm{491}}^1\times {\mathrm{5351}}^1$

素因数の和:5854

約数の個数: 20

約数和(自身を含む): 318615264

約数和(自身を除く): 105800643

約数列:

[1, 3, 9, 27, 81, 491, 1473, 4419, 5351, 13257, 16053, 39771, 48159, 144477, 433431, 2627341, 7882023, 23646069, 70938207, 212814621]

約数ペア:

[(1, 212814621), (3, 70938207), (9, 23646069), (27, 7882023), (81, 2627341), (491, 433431), (1473, 144477), (4419, 48159), (5351, 39771), (13257, 16053)]