28904225

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8693}}^1$

素因数の和:8729

約数の個数: 24

約数和(自身を含む): 43122240

約数和(自身を除く): 14218015

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 8693, 43465, 60851, 165167, 217325, 304255, 825835, 1156169, 1521275, 4129175, 5780845, 28904225]

約数ペア:

[(1, 28904225), (5, 5780845), (7, 4129175), (19, 1521275), (25, 1156169), (35, 825835), (95, 304255), (133, 217325), (175, 165167), (475, 60851), (665, 43465), (3325, 8693)]