20033900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2251}}^1$

素因数の和:2354

約数の個数: 36

約数和(自身を含む): 43981560

約数和(自身を除く): 23947660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2251, 4450, 4502, 8900, 9004, 11255, 22510, 45020, 56275, 112550, 200339, 225100, 400678, 801356, 1001695, 2003390, 4006780, 5008475, 10016950, 20033900]

約数ペア:

[(1, 20033900), (2, 10016950), (4, 5008475), (5, 4006780), (10, 2003390), (20, 1001695), (25, 801356), (50, 400678), (89, 225100), (100, 200339), (178, 112550), (356, 56275), (445, 45020), (890, 22510), (1780, 11255), (2225, 9004), (2251, 8900), (4450, 4502)]