19809800

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2677}}^1$

素因数の和:2730

約数の個数: 48

約数和(自身を含む): 47320260

約数和(自身を除く): 27510460

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 148, 185, 200, 296, 370, 740, 925, 1480, 1850, 2677, 3700, 5354, 7400, 10708, 13385, 21416, 26770, 53540, 66925, 99049, 107080, 133850, 198098, 267700, 396196, 495245, 535400, 792392, 990490, 1980980, 2476225, 3961960, 4952450, 9904900, 19809800]

約数ペア:

[(1, 19809800), (2, 9904900), (4, 4952450), (5, 3961960), (8, 2476225), (10, 1980980), (20, 990490), (25, 792392), (37, 535400), (40, 495245), (50, 396196), (74, 267700), (100, 198098), (148, 133850), (185, 107080), (200, 99049), (296, 66925), (370, 53540), (740, 26770), (925, 21416), (1480, 13385), (1850, 10708), (2677, 7400), (3700, 5354)]