81338138

素因数分解:

$2^1\times 7^2\times {\mathrm{601}}^1\times {\mathrm{1381}}^1$

素因数の和:1998

約数の個数: 24

約数和(自身を含む): 142265844

約数和(自身を除く): 60927706

約数列:

[1, 2, 7, 14, 49, 98, 601, 1202, 1381, 2762, 4207, 8414, 9667, 19334, 29449, 58898, 67669, 135338, 829981, 1659962, 5809867, 11619734, 40669069, 81338138]

約数ペア:

[(1, 81338138), (2, 40669069), (7, 11619734), (14, 5809867), (49, 1659962), (98, 829981), (601, 135338), (1202, 67669), (1381, 58898), (2762, 29449), (4207, 19334), (8414, 9667)]