8687500

素因数分解:

$2^2\times 5^6\times {\mathrm{139}}^1$

素因数の和:173

約数の個数: 42

約数和(自身を含む): 19140380

約数和(自身を除く): 10452880

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 139, 250, 278, 500, 556, 625, 695, 1250, 1390, 2500, 2780, 3125, 3475, 6250, 6950, 12500, 13900, 15625, 17375, 31250, 34750, 62500, 69500, 86875, 173750, 347500, 434375, 868750, 1737500, 2171875, 4343750, 8687500]

約数ペア:

[(1, 8687500), (2, 4343750), (4, 2171875), (5, 1737500), (10, 868750), (20, 434375), (25, 347500), (50, 173750), (100, 86875), (125, 69500), (139, 62500), (250, 34750), (278, 31250), (500, 17375), (556, 15625), (625, 13900), (695, 12500), (1250, 6950), (1390, 6250), (2500, 3475), (2780, 3125)]