28405400

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{1303}}^1$

素因数の和:1428

約数の個数: 48

約数和(自身を含む): 66699600

約数和(自身を除く): 38294200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 200, 218, 436, 545, 872, 1090, 1303, 2180, 2606, 2725, 4360, 5212, 5450, 6515, 10424, 10900, 13030, 21800, 26060, 32575, 52120, 65150, 130300, 142027, 260600, 284054, 568108, 710135, 1136216, 1420270, 2840540, 3550675, 5681080, 7101350, 14202700, 28405400]

約数ペア:

[(1, 28405400), (2, 14202700), (4, 7101350), (5, 5681080), (8, 3550675), (10, 2840540), (20, 1420270), (25, 1136216), (40, 710135), (50, 568108), (100, 284054), (109, 260600), (200, 142027), (218, 130300), (436, 65150), (545, 52120), (872, 32575), (1090, 26060), (1303, 21800), (2180, 13030), (2606, 10900), (2725, 10424), (4360, 6515), (5212, 5450)]