28421125

素因数分解:

$5^3\times {\mathrm{271}}^1\times {\mathrm{839}}^1$

素因数の和:1125

約数の個数: 16

約数和(自身を含む): 35642880

約数和(自身を除く): 7221755

約数列:

[1, 5, 25, 125, 271, 839, 1355, 4195, 6775, 20975, 33875, 104875, 227369, 1136845, 5684225, 28421125]

約数ペア:

[(1, 28421125), (5, 5684225), (25, 1136845), (125, 227369), (271, 104875), (839, 33875), (1355, 20975), (4195, 6775)]