218974040

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{19763}}^1$

素因数の和:20051

約数の個数: 32

約数和(自身を含む): 494495280

約数和(自身を除く): 275521240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 19763, 39526, 79052, 98815, 158104, 197630, 395260, 790520, 5474351, 10948702, 21897404, 27371755, 43794808, 54743510, 109487020, 218974040]

約数ペア:

[(1, 218974040), (2, 109487020), (4, 54743510), (5, 43794808), (8, 27371755), (10, 21897404), (20, 10948702), (40, 5474351), (277, 790520), (554, 395260), (1108, 197630), (1385, 158104), (2216, 98815), (2770, 79052), (5540, 39526), (11080, 19763)]