66550025

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1997}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 87208704

約数和(自身を除く): 20658679

約数列:

[1, 5, 25, 31, 43, 155, 215, 775, 1075, 1333, 1997, 6665, 9985, 33325, 49925, 61907, 85871, 309535, 429355, 1547675, 2146775, 2662001, 13310005, 66550025]

約数ペア:

[(1, 66550025), (5, 13310005), (25, 2662001), (31, 2146775), (43, 1547675), (155, 429355), (215, 309535), (775, 85871), (1075, 61907), (1333, 49925), (1997, 33325), (6665, 9985)]