131427261

素因数分解:

$3^2\times 7^2\times {\mathrm{298021}}^1$

素因数の和:298041

約数の個数: 18

約数和(自身を含む): 220834302

約数和(自身を除く): 89407041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 298021, 894063, 2086147, 2682189, 6258441, 14603029, 18775323, 43809087, 131427261]

約数ペア:

[(1, 131427261), (3, 43809087), (7, 18775323), (9, 14603029), (21, 6258441), (49, 2682189), (63, 2086147), (147, 894063), (441, 298021)]