21129075

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8537}}^1$

素因数の和:8564

約数の個数: 36

約数和(自身を含む): 41289768

約数和(自身を除く): 20160693

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8537, 25611, 42685, 76833, 93907, 128055, 213425, 281721, 384165, 469535, 640275, 845163, 1408605, 1920825, 2347675, 4225815, 7043025, 21129075]

約数ペア:

[(1, 21129075), (3, 7043025), (5, 4225815), (9, 2347675), (11, 1920825), (15, 1408605), (25, 845163), (33, 640275), (45, 469535), (55, 384165), (75, 281721), (99, 213425), (165, 128055), (225, 93907), (275, 76833), (495, 42685), (825, 25611), (2475, 8537)]