21280851

素因数分解:

$3^2\times {\mathrm{1427}}^1\times {\mathrm{1657}}^1$

素因数の和:3090

約数の個数: 12

約数和(自身を含む): 30779112

約数和(自身を除く): 9498261

約数列:

[1, 3, 9, 1427, 1657, 4281, 4971, 12843, 14913, 2364539, 7093617, 21280851]

約数ペア:

[(1, 21280851), (3, 7093617), (9, 2364539), (1427, 14913), (1657, 12843), (4281, 4971)]