81400555

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1\times {\mathrm{1753}}^1$

素因数の和:2046

約数の個数: 16

約数和(自身を含む): 100777824

約数和(自身を除く): 19377269

約数列:

[1, 5, 37, 185, 251, 1255, 1753, 8765, 9287, 46435, 64861, 324305, 440003, 2200015, 16280111, 81400555]

約数ペア:

[(1, 81400555), (5, 16280111), (37, 2200015), (185, 440003), (251, 324305), (1255, 64861), (1753, 46435), (8765, 9287)]