28030000

素因数分解:

$2^4\times 5^4\times {\mathrm{2803}}^1$

素因数の和:2831

約数の個数: 50

約数和(自身を含む): 67887644

約数和(自身を除く): 39857644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2803, 5000, 5606, 10000, 11212, 14015, 22424, 28030, 44848, 56060, 70075, 112120, 140150, 224240, 280300, 350375, 560600, 700750, 1121200, 1401500, 1751875, 2803000, 3503750, 5606000, 7007500, 14015000, 28030000]

約数ペア:

[(1, 28030000), (2, 14015000), (4, 7007500), (5, 5606000), (8, 3503750), (10, 2803000), (16, 1751875), (20, 1401500), (25, 1121200), (40, 700750), (50, 560600), (80, 350375), (100, 280300), (125, 224240), (200, 140150), (250, 112120), (400, 70075), (500, 56060), (625, 44848), (1000, 28030), (1250, 22424), (2000, 14015), (2500, 11212), (2803, 10000), (5000, 5606)]