20685825

素因数分解:

$3^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1033}}^1$

素因数の和:1138

約数の個数: 36

約数和(自身を含む): 37503180

約数和(自身を除く): 16817355

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 89, 225, 267, 445, 801, 1033, 1335, 2225, 3099, 4005, 5165, 6675, 9297, 15495, 20025, 25825, 46485, 77475, 91937, 232425, 275811, 459685, 827433, 1379055, 2298425, 4137165, 6895275, 20685825]

約数ペア:

[(1, 20685825), (3, 6895275), (5, 4137165), (9, 2298425), (15, 1379055), (25, 827433), (45, 459685), (75, 275811), (89, 232425), (225, 91937), (267, 77475), (445, 46485), (801, 25825), (1033, 20025), (1335, 15495), (2225, 9297), (3099, 6675), (4005, 5165)]