20017225

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 25935840

約数和(自身を除く): 5918615

約数列:

[1, 5, 25, 41, 59, 205, 295, 331, 1025, 1475, 1655, 2419, 8275, 12095, 13571, 19529, 60475, 67855, 97645, 339275, 488225, 800689, 4003445, 20017225]

約数ペア:

[(1, 20017225), (5, 4003445), (25, 800689), (41, 488225), (59, 339275), (205, 97645), (295, 67855), (331, 60475), (1025, 19529), (1475, 13571), (1655, 12095), (2419, 8275)]