128965825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{15971}}^1$

素因数の和:16017

約数の個数: 24

約数和(自身を含む): 178247520

約数和(自身を除く): 49281695

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 8075, 15971, 79855, 271507, 303449, 399275, 1357535, 1517245, 5158633, 6787675, 7586225, 25793165, 128965825]

約数ペア:

[(1, 128965825), (5, 25793165), (17, 7586225), (19, 6787675), (25, 5158633), (85, 1517245), (95, 1357535), (323, 399275), (425, 303449), (475, 271507), (1615, 79855), (8075, 15971)]