79620280

素因数分解:

$2^3\times 5^1\times {\mathrm{1990507}}^1$

素因数の和:1990518

約数の個数: 16

約数和(自身を含む): 179145720

約数和(自身を除く): 99525440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1990507, 3981014, 7962028, 9952535, 15924056, 19905070, 39810140, 79620280]

約数ペア:

[(1, 79620280), (2, 39810140), (4, 19905070), (5, 15924056), (8, 9952535), (10, 7962028), (20, 3981014), (40, 1990507)]