18974825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{929}}^1$

素因数の和:1001

約数の個数: 24

約数和(自身を含む): 25370400

約数和(自身を除く): 6395575

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 929, 1075, 4085, 4645, 17651, 20425, 23225, 39947, 88255, 199735, 441275, 758993, 998675, 3794965, 18974825]

約数ペア:

[(1, 18974825), (5, 3794965), (19, 998675), (25, 758993), (43, 441275), (95, 199735), (215, 88255), (475, 39947), (817, 23225), (929, 20425), (1075, 17651), (4085, 4645)]