69999440

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2551}}^1$

素因数の和:2585

約数の個数: 80

約数和(自身を含む): 189868800

約数和(自身を除く): 119869360

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, 2551, 2744, 3430, 3920, 5102, 5488, 6860, 10204, 12755, 13720, 17857, 20408, 25510, 27440, 35714, 40816, 51020, 71428, 89285, 102040, 124999, 142856, 178570, 204080, 249998, 285712, 357140, 499996, 624995, 714280, 874993, 999992, 1249990, 1428560, 1749986, 1999984, 2499980, 3499972, 4374965, 4999960, 6999944, 8749930, 9999920, 13999888, 17499860, 34999720, 69999440]

約数ペア:

[(1, 69999440), (2, 34999720), (4, 17499860), (5, 13999888), (7, 9999920), (8, 8749930), (10, 6999944), (14, 4999960), (16, 4374965), (20, 3499972), (28, 2499980), (35, 1999984), (40, 1749986), (49, 1428560), (56, 1249990), (70, 999992), (80, 874993), (98, 714280), (112, 624995), (140, 499996), (196, 357140), (245, 285712), (280, 249998), (343, 204080), (392, 178570), (490, 142856), (560, 124999), (686, 102040), (784, 89285), (980, 71428), (1372, 51020), (1715, 40816), (1960, 35714), (2551, 27440), (2744, 25510), (3430, 20408), (3920, 17857), (5102, 13720), (5488, 12755), (6860, 10204)]