21116925

素因数分解:

$3^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{739}}^1$

素因数の和:882

約数の個数: 36

約数和(自身を含む): 38172160

約数和(自身を除く): 17055235

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 127, 225, 381, 635, 739, 1143, 1905, 2217, 3175, 3695, 5715, 6651, 9525, 11085, 18475, 28575, 33255, 55425, 93853, 166275, 281559, 469265, 844677, 1407795, 2346325, 4223385, 7038975, 21116925]

約数ペア:

[(1, 21116925), (3, 7038975), (5, 4223385), (9, 2346325), (15, 1407795), (25, 844677), (45, 469265), (75, 281559), (127, 166275), (225, 93853), (381, 55425), (635, 33255), (739, 28575), (1143, 18475), (1905, 11085), (2217, 9525), (3175, 6651), (3695, 5715)]