388620520

素因数分解:

$2^3\times 5^1\times {\mathrm{9715513}}^1$

素因数の和:9715524

約数の個数: 16

約数和(自身を含む): 874396260

約数和(自身を除く): 485775740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9715513, 19431026, 38862052, 48577565, 77724104, 97155130, 194310260, 388620520]

約数ペア:

[(1, 388620520), (2, 194310260), (4, 97155130), (5, 77724104), (8, 48577565), (10, 38862052), (20, 19431026), (40, 9715513)]