28704109

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{251}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 36033984

約数和(自身を除く): 7329875

約数列:

[1, 7, 17, 31, 119, 217, 251, 527, 961, 1757, 3689, 4267, 6727, 7781, 16337, 29869, 54467, 114359, 132277, 241211, 925939, 1688477, 4100587, 28704109]

約数ペア:

[(1, 28704109), (7, 4100587), (17, 1688477), (31, 925939), (119, 241211), (217, 132277), (251, 114359), (527, 54467), (961, 29869), (1757, 16337), (3689, 7781), (4267, 6727)]