21251020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8929}}^1$

素因数の和:8962

約数の個数: 48

約数和(自身を含む): 54008640

約数和(自身を除く): 32757620

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8929, 17858, 35716, 44645, 62503, 89290, 125006, 151793, 178580, 250012, 303586, 312515, 607172, 625030, 758965, 1062551, 1250060, 1517930, 2125102, 3035860, 4250204, 5312755, 10625510, 21251020]

約数ペア:

[(1, 21251020), (2, 10625510), (4, 5312755), (5, 4250204), (7, 3035860), (10, 2125102), (14, 1517930), (17, 1250060), (20, 1062551), (28, 758965), (34, 625030), (35, 607172), (68, 312515), (70, 303586), (85, 250012), (119, 178580), (140, 151793), (170, 125006), (238, 89290), (340, 62503), (476, 44645), (595, 35716), (1190, 17858), (2380, 8929)]