20786180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25349}}^1$

素因数の和:25399

約数の個数: 24

約数和(自身を含む): 44717400

約数和(自身を除く): 23931220

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25349, 50698, 101396, 126745, 253490, 506980, 1039309, 2078618, 4157236, 5196545, 10393090, 20786180]

約数ペア:

[(1, 20786180), (2, 10393090), (4, 5196545), (5, 4157236), (10, 2078618), (20, 1039309), (41, 506980), (82, 253490), (164, 126745), (205, 101396), (410, 50698), (820, 25349)]