28734765

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26981}}^1$

素因数の和:27060

約数の個数: 16

約数和(自身を含む): 46624896

約数和(自身を除く): 17890131

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 26981, 80943, 134905, 404715, 1915651, 5746953, 9578255, 28734765]

約数ペア:

[(1, 28734765), (3, 9578255), (5, 5746953), (15, 1915651), (71, 404715), (213, 134905), (355, 80943), (1065, 26981)]