21189370

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{487}}^1$

素因数の和:742

約数の個数: 32

約数和(自身を含む): 40406400

約数和(自身を除く): 19217030

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 229, 458, 487, 974, 1145, 2290, 2435, 4351, 4870, 8702, 9253, 18506, 21755, 43510, 46265, 92530, 111523, 223046, 557615, 1115230, 2118937, 4237874, 10594685, 21189370]

約数ペア:

[(1, 21189370), (2, 10594685), (5, 4237874), (10, 2118937), (19, 1115230), (38, 557615), (95, 223046), (190, 111523), (229, 92530), (458, 46265), (487, 43510), (974, 21755), (1145, 18506), (2290, 9253), (2435, 8702), (4351, 4870)]