66788380

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:478

約数の個数: 48

約数和(自身を含む): 143236800

約数和(自身を除く): 76448420

約数列:

[1, 2, 4, 5, 10, 20, 97, 173, 194, 199, 346, 388, 398, 485, 692, 796, 865, 970, 995, 1730, 1940, 1990, 3460, 3980, 16781, 19303, 33562, 34427, 38606, 67124, 68854, 77212, 83905, 96515, 137708, 167810, 172135, 193030, 335620, 344270, 386060, 688540, 3339419, 6678838, 13357676, 16697095, 33394190, 66788380]

約数ペア:

[(1, 66788380), (2, 33394190), (4, 16697095), (5, 13357676), (10, 6678838), (20, 3339419), (97, 688540), (173, 386060), (194, 344270), (199, 335620), (346, 193030), (388, 172135), (398, 167810), (485, 137708), (692, 96515), (796, 83905), (865, 77212), (970, 68854), (995, 67124), (1730, 38606), (1940, 34427), (1990, 33562), (3460, 19303), (3980, 16781)]