645249025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79907}}^1$

素因数の和:79953

約数の個数: 24

約数和(自身を含む): 891773280

約数和(自身を除く): 246524255

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 8075, 79907, 399535, 1358419, 1518233, 1997675, 6792095, 7591165, 25809961, 33960475, 37955825, 129049805, 645249025]

約数ペア:

[(1, 645249025), (5, 129049805), (17, 37955825), (19, 33960475), (25, 25809961), (85, 7591165), (95, 6792095), (323, 1997675), (425, 1518233), (475, 1358419), (1615, 399535), (8075, 79907)]