205123760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59629}}^1$

素因数の和:59685

約数の個数: 40

約数和(自身を含む): 488011920

約数和(自身を除く): 282888160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 59629, 119258, 238516, 298145, 477032, 596290, 954064, 1192580, 2385160, 2564047, 4770320, 5128094, 10256188, 12820235, 20512376, 25640470, 41024752, 51280940, 102561880, 205123760]

約数ペア:

[(1, 205123760), (2, 102561880), (4, 51280940), (5, 41024752), (8, 25640470), (10, 20512376), (16, 12820235), (20, 10256188), (40, 5128094), (43, 4770320), (80, 2564047), (86, 2385160), (172, 1192580), (215, 954064), (344, 596290), (430, 477032), (688, 298145), (860, 238516), (1720, 119258), (3440, 59629)]