28313915

素因数分解:

$5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{709}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 39822480

約数和(自身を除く): 11508565

約数列:

[1, 5, 7, 35, 49, 163, 245, 709, 815, 1141, 3545, 4963, 5705, 7987, 24815, 34741, 39935, 115567, 173705, 577835, 808969, 4044845, 5662783, 28313915]

約数ペア:

[(1, 28313915), (5, 5662783), (7, 4044845), (35, 808969), (49, 577835), (163, 173705), (245, 115567), (709, 39935), (815, 34741), (1141, 24815), (3545, 7987), (4963, 5705)]