81940516

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{7523}}^1$

素因数の和:7923

約数の個数: 24

約数和(自身を含む): 164324160

約数和(自身を除く): 82383644

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2723, 5446, 7523, 10892, 15046, 30092, 52661, 105322, 210644, 2926447, 5852894, 11705788, 20485129, 40970258, 81940516]

約数ペア:

[(1, 81940516), (2, 40970258), (4, 20485129), (7, 11705788), (14, 5852894), (28, 2926447), (389, 210644), (778, 105322), (1556, 52661), (2723, 30092), (5446, 15046), (7523, 10892)]