279415900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{739}}^1$

素因数の和:971

約数の個数: 72

約数和(自身を含む): 642320000

約数和(自身を除く): 362904100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 199, 380, 398, 475, 739, 796, 950, 995, 1478, 1900, 1990, 2956, 3695, 3781, 3980, 4975, 7390, 7562, 9950, 14041, 14780, 15124, 18475, 18905, 19900, 28082, 36950, 37810, 56164, 70205, 73900, 75620, 94525, 140410, 147061, 189050, 280820, 294122, 351025, 378100, 588244, 702050, 735305, 1404100, 1470610, 2794159, 2941220, 3676525, 5588318, 7353050, 11176636, 13970795, 14706100, 27941590, 55883180, 69853975, 139707950, 279415900]

約数ペア:

[(1, 279415900), (2, 139707950), (4, 69853975), (5, 55883180), (10, 27941590), (19, 14706100), (20, 13970795), (25, 11176636), (38, 7353050), (50, 5588318), (76, 3676525), (95, 2941220), (100, 2794159), (190, 1470610), (199, 1404100), (380, 735305), (398, 702050), (475, 588244), (739, 378100), (796, 351025), (950, 294122), (995, 280820), (1478, 189050), (1900, 147061), (1990, 140410), (2956, 94525), (3695, 75620), (3781, 73900), (3980, 70205), (4975, 56164), (7390, 37810), (7562, 36950), (9950, 28082), (14041, 19900), (14780, 18905), (15124, 18475)]