81761615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{7717}}^1$

素因数の和:7898

約数の個数: 16

約数和(自身を含む): 106323168

約数和(自身を除く): 24561553

約数列:

[1, 5, 13, 65, 163, 815, 2119, 7717, 10595, 38585, 100321, 501605, 1257871, 6289355, 16352323, 81761615]

約数ペア:

[(1, 81761615), (5, 16352323), (13, 6289355), (65, 1257871), (163, 501605), (815, 100321), (2119, 38585), (7717, 10595)]