21146440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10789}}^1$

素因数の和:10814

約数の個数: 48

約数和(自身を含む): 55352700

約数和(自身を除く): 34206260

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10789, 21578, 43156, 53945, 75523, 86312, 107890, 151046, 215780, 302092, 377615, 431560, 528661, 604184, 755230, 1057322, 1510460, 2114644, 2643305, 3020920, 4229288, 5286610, 10573220, 21146440]

約数ペア:

[(1, 21146440), (2, 10573220), (4, 5286610), (5, 4229288), (7, 3020920), (8, 2643305), (10, 2114644), (14, 1510460), (20, 1057322), (28, 755230), (35, 604184), (40, 528661), (49, 431560), (56, 377615), (70, 302092), (98, 215780), (140, 151046), (196, 107890), (245, 86312), (280, 75523), (392, 53945), (490, 43156), (980, 21578), (1960, 10789)]