388900520

素因数分解:

$2^3\times 5^1\times {\mathrm{9722513}}^1$

素因数の和:9722524

約数の個数: 16

約数和(自身を含む): 875026260

約数和(自身を除く): 486125740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9722513, 19445026, 38890052, 48612565, 77780104, 97225130, 194450260, 388900520]

約数ペア:

[(1, 388900520), (2, 194450260), (4, 97225130), (5, 77780104), (8, 48612565), (10, 38890052), (20, 19445026), (40, 9722513)]