28666725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{20117}}^1$

素因数の和:20149

約数の個数: 24

約数和(自身を含む): 49892640

約数和(自身を除く): 21225915

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 20117, 60351, 100585, 301755, 382223, 502925, 1146669, 1508775, 1911115, 5733345, 9555575, 28666725]

約数ペア:

[(1, 28666725), (3, 9555575), (5, 5733345), (15, 1911115), (19, 1508775), (25, 1146669), (57, 502925), (75, 382223), (95, 301755), (285, 100585), (475, 60351), (1425, 20117)]