54687920

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1993}}^1$

素因数の和:2027

約数の個数: 80

約数和(自身を含む): 148353600

約数和(自身を除く): 93665680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 1993, 2744, 3430, 3920, 3986, 5488, 6860, 7972, 9965, 13720, 13951, 15944, 19930, 27440, 27902, 31888, 39860, 55804, 69755, 79720, 97657, 111608, 139510, 159440, 195314, 223216, 279020, 390628, 488285, 558040, 683599, 781256, 976570, 1116080, 1367198, 1562512, 1953140, 2734396, 3417995, 3906280, 5468792, 6835990, 7812560, 10937584, 13671980, 27343960, 54687920]

約数ペア:

[(1, 54687920), (2, 27343960), (4, 13671980), (5, 10937584), (7, 7812560), (8, 6835990), (10, 5468792), (14, 3906280), (16, 3417995), (20, 2734396), (28, 1953140), (35, 1562512), (40, 1367198), (49, 1116080), (56, 976570), (70, 781256), (80, 683599), (98, 558040), (112, 488285), (140, 390628), (196, 279020), (245, 223216), (280, 195314), (343, 159440), (392, 139510), (490, 111608), (560, 97657), (686, 79720), (784, 69755), (980, 55804), (1372, 39860), (1715, 31888), (1960, 27902), (1993, 27440), (2744, 19930), (3430, 15944), (3920, 13951), (3986, 13720), (5488, 9965), (6860, 7972)]