28813750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 80

約数和(自身を含む): 64104480

約数和(自身を除く): 35290730

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 50, 70, 74, 89, 125, 175, 178, 185, 250, 259, 350, 370, 445, 518, 623, 625, 875, 890, 925, 1246, 1250, 1295, 1750, 1850, 2225, 2590, 3115, 3293, 4375, 4450, 4625, 6230, 6475, 6586, 8750, 9250, 11125, 12950, 15575, 16465, 22250, 23051, 23125, 31150, 32375, 32930, 46102, 46250, 55625, 64750, 77875, 82325, 111250, 115255, 155750, 161875, 164650, 230510, 323750, 389375, 411625, 576275, 778750, 823250, 1152550, 2058125, 2881375, 4116250, 5762750, 14406875, 28813750]

約数ペア:

[(1, 28813750), (2, 14406875), (5, 5762750), (7, 4116250), (10, 2881375), (14, 2058125), (25, 1152550), (35, 823250), (37, 778750), (50, 576275), (70, 411625), (74, 389375), (89, 323750), (125, 230510), (175, 164650), (178, 161875), (185, 155750), (250, 115255), (259, 111250), (350, 82325), (370, 77875), (445, 64750), (518, 55625), (623, 46250), (625, 46102), (875, 32930), (890, 32375), (925, 31150), (1246, 23125), (1250, 23051), (1295, 22250), (1750, 16465), (1850, 15575), (2225, 12950), (2590, 11125), (3115, 9250), (3293, 8750), (4375, 6586), (4450, 6475), (4625, 6230)]