20741800

素因数分解:

$2^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{757}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 48640860

約数和(自身を除く): 27899060

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 137, 200, 274, 548, 685, 757, 1096, 1370, 1514, 2740, 3028, 3425, 3785, 5480, 6056, 6850, 7570, 13700, 15140, 18925, 27400, 30280, 37850, 75700, 103709, 151400, 207418, 414836, 518545, 829672, 1037090, 2074180, 2592725, 4148360, 5185450, 10370900, 20741800]

約数ペア:

[(1, 20741800), (2, 10370900), (4, 5185450), (5, 4148360), (8, 2592725), (10, 2074180), (20, 1037090), (25, 829672), (40, 518545), (50, 414836), (100, 207418), (137, 151400), (200, 103709), (274, 75700), (548, 37850), (685, 30280), (757, 27400), (1096, 18925), (1370, 15140), (1514, 13700), (2740, 7570), (3028, 6850), (3425, 6056), (3785, 5480)]