21862820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{3187}}^1$

素因数の和:3217

約数の個数: 48

約数和(自身を含む): 53558400

約数和(自身を除く): 31695580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3187, 3430, 6374, 6860, 12748, 15935, 22309, 31870, 44618, 63740, 89236, 111545, 156163, 223090, 312326, 446180, 624652, 780815, 1093141, 1561630, 2186282, 3123260, 4372564, 5465705, 10931410, 21862820]

約数ペア:

[(1, 21862820), (2, 10931410), (4, 5465705), (5, 4372564), (7, 3123260), (10, 2186282), (14, 1561630), (20, 1093141), (28, 780815), (35, 624652), (49, 446180), (70, 312326), (98, 223090), (140, 156163), (196, 111545), (245, 89236), (343, 63740), (490, 44618), (686, 31870), (980, 22309), (1372, 15935), (1715, 12748), (3187, 6860), (3430, 6374)]