15990500

素因数分解:

$2^2\times 5^3\times {\mathrm{31981}}^1$

素因数の和:32000

約数の個数: 24

約数和(自身を含む): 34924344

約数和(自身を除く): 18933844

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 31981, 63962, 127924, 159905, 319810, 639620, 799525, 1599050, 3198100, 3997625, 7995250, 15990500]

約数ペア:

[(1, 15990500), (2, 7995250), (4, 3997625), (5, 3198100), (10, 1599050), (20, 799525), (25, 639620), (50, 319810), (100, 159905), (125, 127924), (250, 63962), (500, 31981)]