81642064

素因数分解:

$2^4\times 7^1\times {\mathrm{728947}}^1$

素因数の和:728962

約数の個数: 20

約数和(自身を含む): 180779104

約数和(自身を除く): 99137040

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 728947, 1457894, 2915788, 5102629, 5831576, 10205258, 11663152, 20410516, 40821032, 81642064]

約数ペア:

[(1, 81642064), (2, 40821032), (4, 20410516), (7, 11663152), (8, 10205258), (14, 5831576), (16, 5102629), (28, 2915788), (56, 1457894), (112, 728947)]