81098992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20521}}^1$

素因数の和:20561

約数の個数: 40

約数和(自身を含む): 178130960

約数和(自身を除く): 97031968

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20521, 41042, 82084, 164168, 266773, 328336, 389899, 533546, 779798, 1067092, 1559596, 2134184, 3119192, 4268368, 5068687, 6238384, 10137374, 20274748, 40549496, 81098992]

約数ペア:

[(1, 81098992), (2, 40549496), (4, 20274748), (8, 10137374), (13, 6238384), (16, 5068687), (19, 4268368), (26, 3119192), (38, 2134184), (52, 1559596), (76, 1067092), (104, 779798), (152, 533546), (208, 389899), (247, 328336), (304, 266773), (494, 164168), (988, 82084), (1976, 41042), (3952, 20521)]