19949000

素因数分解:

$2^3\times 5^3\times {\mathrm{19949}}^1$

素因数の和:19970

約数の個数: 32

約数和(自身を含む): 46683000

約数和(自身を除く): 26734000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 19949, 39898, 79796, 99745, 159592, 199490, 398980, 498725, 797960, 997450, 1994900, 2493625, 3989800, 4987250, 9974500, 19949000]

約数ペア:

[(1, 19949000), (2, 9974500), (4, 4987250), (5, 3989800), (8, 2493625), (10, 1994900), (20, 997450), (25, 797960), (40, 498725), (50, 398980), (100, 199490), (125, 159592), (200, 99745), (250, 79796), (500, 39898), (1000, 19949)]