81256217

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 103403520

約数和(自身を除く): 22147303

約数列:

[1, 7, 19, 23, 101, 133, 161, 263, 437, 707, 1841, 1919, 2323, 3059, 4997, 6049, 13433, 16261, 26563, 34979, 42343, 44137, 114931, 185941, 308959, 504697, 610949, 804517, 3532879, 4276643, 11608031, 81256217]

約数ペア:

[(1, 81256217), (7, 11608031), (19, 4276643), (23, 3532879), (101, 804517), (133, 610949), (161, 504697), (263, 308959), (437, 185941), (707, 114931), (1841, 44137), (1919, 42343), (2323, 34979), (3059, 26563), (4997, 16261), (6049, 13433)]