9991051

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 12312000

約数和(自身を除く): 2320949

約数列:

[1, 7, 29, 49, 79, 89, 203, 553, 623, 1421, 2291, 2581, 3871, 4361, 7031, 16037, 18067, 49217, 112259, 126469, 203899, 344519, 1427293, 9991051]

約数ペア:

[(1, 9991051), (7, 1427293), (29, 344519), (49, 203899), (79, 126469), (89, 112259), (203, 49217), (553, 18067), (623, 16037), (1421, 7031), (2291, 4361), (2581, 3871)]