13210820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{479}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 31933440

約数和(自身を除く): 18722620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 479, 788, 958, 985, 1379, 1916, 1970, 2395, 2758, 3353, 3940, 4790, 5516, 6706, 6895, 9580, 13412, 13790, 16765, 27580, 33530, 67060, 94363, 188726, 377452, 471815, 660541, 943630, 1321082, 1887260, 2642164, 3302705, 6605410, 13210820]

約数ペア:

[(1, 13210820), (2, 6605410), (4, 3302705), (5, 2642164), (7, 1887260), (10, 1321082), (14, 943630), (20, 660541), (28, 471815), (35, 377452), (70, 188726), (140, 94363), (197, 67060), (394, 33530), (479, 27580), (788, 16765), (958, 13790), (985, 13412), (1379, 9580), (1916, 6895), (1970, 6706), (2395, 5516), (2758, 4790), (3353, 3940)]