205121240

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1\times {\mathrm{353}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 471528000

約数和(自身を除く): 266406760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 199, 292, 353, 365, 398, 584, 706, 730, 796, 995, 1412, 1460, 1592, 1765, 1990, 2824, 2920, 3530, 3980, 7060, 7960, 14120, 14527, 25769, 29054, 51538, 58108, 70247, 72635, 103076, 116216, 128845, 140494, 145270, 206152, 257690, 280988, 290540, 351235, 515380, 561976, 581080, 702470, 1030760, 1404940, 2809880, 5128031, 10256062, 20512124, 25640155, 41024248, 51280310, 102560620, 205121240]

約数ペア:

[(1, 205121240), (2, 102560620), (4, 51280310), (5, 41024248), (8, 25640155), (10, 20512124), (20, 10256062), (40, 5128031), (73, 2809880), (146, 1404940), (199, 1030760), (292, 702470), (353, 581080), (365, 561976), (398, 515380), (584, 351235), (706, 290540), (730, 280988), (796, 257690), (995, 206152), (1412, 145270), (1460, 140494), (1592, 128845), (1765, 116216), (1990, 103076), (2824, 72635), (2920, 70247), (3530, 58108), (3980, 51538), (7060, 29054), (7960, 25769), (14120, 14527)]