81390064

素因数分解:

$2^4\times 7^1\times {\mathrm{726697}}^1$

素因数の和:726712

約数の個数: 20

約数和(自身を含む): 180221104

約数和(自身を除く): 98831040

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 726697, 1453394, 2906788, 5086879, 5813576, 10173758, 11627152, 20347516, 40695032, 81390064]

約数ペア:

[(1, 81390064), (2, 40695032), (4, 20347516), (7, 11627152), (8, 10173758), (14, 5813576), (16, 5086879), (28, 2906788), (56, 1453394), (112, 726697)]