204080780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{248879}}^1$

素因数の和:248929

約数の個数: 24

約数和(自身を含む): 439024320

約数和(自身を除く): 234943540

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 248879, 497758, 995516, 1244395, 2488790, 4977580, 10204039, 20408078, 40816156, 51020195, 102040390, 204080780]

約数ペア:

[(1, 204080780), (2, 102040390), (4, 51020195), (5, 40816156), (10, 20408078), (20, 10204039), (41, 4977580), (82, 2488790), (164, 1244395), (205, 995516), (410, 497758), (820, 248879)]