28920745

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{17581}}^1$

素因数の和:17640

約数の個数: 16

約数和(自身を含む): 40508928

約数和(自身を除く): 11588183

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 17581, 87905, 123067, 615335, 826307, 4131535, 5784149, 28920745]

約数ペア:

[(1, 28920745), (5, 5784149), (7, 4131535), (35, 826307), (47, 615335), (235, 123067), (329, 87905), (1645, 17581)]