20764528520

素因数分解:

$2^3\times 5^1\times {\mathrm{519113213}}^1$

素因数の和:519113224

約数の個数: 16

約数和(自身を含む): 46720189260

約数和(自身を除く): 25955660740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 519113213, 1038226426, 2076452852, 2595566065, 4152905704, 5191132130, 10382264260, 20764528520]

約数ペア:

[(1, 20764528520), (2, 10382264260), (4, 5191132130), (5, 4152905704), (8, 2595566065), (10, 2076452852), (20, 1038226426), (40, 519113213)]