79400720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2088

約数の個数: 80

約数和(自身を含む): 214057728

約数和(自身を除く): 134657008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 1997, 2485, 2840, 3976, 3994, 4970, 5680, 7952, 7988, 9940, 9985, 13979, 15976, 19880, 19970, 27958, 31952, 39760, 39940, 55916, 69895, 79880, 111832, 139790, 141787, 159760, 223664, 279580, 283574, 559160, 567148, 708935, 992509, 1118320, 1134296, 1417870, 1985018, 2268592, 2835740, 3970036, 4962545, 5671480, 7940072, 9925090, 11342960, 15880144, 19850180, 39700360, 79400720]

約数ペア:

[(1, 79400720), (2, 39700360), (4, 19850180), (5, 15880144), (7, 11342960), (8, 9925090), (10, 7940072), (14, 5671480), (16, 4962545), (20, 3970036), (28, 2835740), (35, 2268592), (40, 1985018), (56, 1417870), (70, 1134296), (71, 1118320), (80, 992509), (112, 708935), (140, 567148), (142, 559160), (280, 283574), (284, 279580), (355, 223664), (497, 159760), (560, 141787), (568, 139790), (710, 111832), (994, 79880), (1136, 69895), (1420, 55916), (1988, 39940), (1997, 39760), (2485, 31952), (2840, 27958), (3976, 19970), (3994, 19880), (4970, 15976), (5680, 13979), (7952, 9985), (7988, 9940)]