21000507227

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1\times {\mathrm{7331}}^1$

素因数の和:7719

約数の個数: 32

約数和(自身を含む): 25436995584

約数和(自身を除く): 4436488357

約数列:

[1, 7, 31, 43, 217, 301, 307, 1333, 2149, 7331, 9331, 9517, 13201, 51317, 66619, 92407, 227261, 315233, 409231, 1590827, 2206631, 2250617, 2864617, 9772223, 15754319, 68405561, 69769127, 96776531, 488383889, 677435717, 3000072461, 21000507227]

約数ペア:

[(1, 21000507227), (7, 3000072461), (31, 677435717), (43, 488383889), (217, 96776531), (301, 69769127), (307, 68405561), (1333, 15754319), (2149, 9772223), (7331, 2864617), (9331, 2250617), (9517, 2206631), (13201, 1590827), (51317, 409231), (66619, 315233), (92407, 227261)]