12740800

素因数分解:

$2^6\times 5^2\times {\mathrm{7963}}^1$

素因数の和:7985

約数の個数: 42

約数和(自身を含む): 31354268

約数和(自身を除く): 18613468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 7963, 15926, 31852, 39815, 63704, 79630, 127408, 159260, 199075, 254816, 318520, 398150, 509632, 637040, 796300, 1274080, 1592600, 2548160, 3185200, 6370400, 12740800]

約数ペア:

[(1, 12740800), (2, 6370400), (4, 3185200), (5, 2548160), (8, 1592600), (10, 1274080), (16, 796300), (20, 637040), (25, 509632), (32, 398150), (40, 318520), (50, 254816), (64, 199075), (80, 159260), (100, 127408), (160, 79630), (200, 63704), (320, 39815), (400, 31852), (800, 15926), (1600, 7963)]