28561815

素因数分解:

$3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{647}}^1$

素因数の和:773

約数の個数: 40

約数和(自身を含む): 51749280

約数和(自身を除く): 23187465

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 327, 405, 545, 647, 981, 1635, 1941, 2943, 3235, 4905, 5823, 8829, 9705, 14715, 17469, 29115, 44145, 52407, 70523, 87345, 211569, 262035, 352615, 634707, 1057845, 1904121, 3173535, 5712363, 9520605, 28561815]

約数ペア:

[(1, 28561815), (3, 9520605), (5, 5712363), (9, 3173535), (15, 1904121), (27, 1057845), (45, 634707), (81, 352615), (109, 262035), (135, 211569), (327, 87345), (405, 70523), (545, 52407), (647, 44145), (981, 29115), (1635, 17469), (1941, 14715), (2943, 9705), (3235, 8829), (4905, 5823)]