20228800

素因数分解:

$2^6\times 5^2\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:338

約数の個数: 84

約数和(自身を含む): 51023520

約数和(自身を除く): 30794720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 47, 50, 64, 80, 94, 100, 160, 188, 200, 235, 269, 320, 376, 400, 470, 538, 752, 800, 940, 1076, 1175, 1345, 1504, 1600, 1880, 2152, 2350, 2690, 3008, 3760, 4304, 4700, 5380, 6725, 7520, 8608, 9400, 10760, 12643, 13450, 15040, 17216, 18800, 21520, 25286, 26900, 37600, 43040, 50572, 53800, 63215, 75200, 86080, 101144, 107600, 126430, 202288, 215200, 252860, 316075, 404576, 430400, 505720, 632150, 809152, 1011440, 1264300, 2022880, 2528600, 4045760, 5057200, 10114400, 20228800]

約数ペア:

[(1, 20228800), (2, 10114400), (4, 5057200), (5, 4045760), (8, 2528600), (10, 2022880), (16, 1264300), (20, 1011440), (25, 809152), (32, 632150), (40, 505720), (47, 430400), (50, 404576), (64, 316075), (80, 252860), (94, 215200), (100, 202288), (160, 126430), (188, 107600), (200, 101144), (235, 86080), (269, 75200), (320, 63215), (376, 53800), (400, 50572), (470, 43040), (538, 37600), (752, 26900), (800, 25286), (940, 21520), (1076, 18800), (1175, 17216), (1345, 15040), (1504, 13450), (1600, 12643), (1880, 10760), (2152, 9400), (2350, 8608), (2690, 7520), (3008, 6725), (3760, 5380), (4304, 4700)]