20475800

素因数分解:

$2^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2767}}^1$

素因数の和:2820

約数の個数: 48

約数和(自身を含む): 48910560

約数和(自身を除く): 28434760

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, 2767, 3700, 5534, 7400, 11068, 13835, 22136, 27670, 55340, 69175, 102379, 110680, 138350, 204758, 276700, 409516, 511895, 553400, 819032, 1023790, 2047580, 2559475, 4095160, 5118950, 10237900, 20475800]

約数ペア:

[(1, 20475800), (2, 10237900), (4, 5118950), (5, 4095160), (8, 2559475), (10, 2047580), (20, 1023790), (25, 819032), (37, 553400), (40, 511895), (50, 409516), (74, 276700), (100, 204758), (148, 138350), (185, 110680), (200, 102379), (296, 69175), (370, 55340), (740, 27670), (925, 22136), (1480, 13835), (1850, 11068), (2767, 7400), (3700, 5534)]