9979805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{431}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 13125888

約数和(自身を除く): 3146083

約数列:

[1, 5, 11, 55, 421, 431, 2105, 2155, 4631, 4741, 23155, 23705, 181451, 907255, 1995961, 9979805]

約数ペア:

[(1, 9979805), (5, 1995961), (11, 907255), (55, 181451), (421, 23705), (431, 23155), (2105, 4741), (2155, 4631)]