18719960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9551}}^1$

素因数の和:9576

約数の個数: 48

約数和(自身を含む): 49001760

約数和(自身を除く): 30281800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9551, 19102, 38204, 47755, 66857, 76408, 95510, 133714, 191020, 267428, 334285, 382040, 467999, 534856, 668570, 935998, 1337140, 1871996, 2339995, 2674280, 3743992, 4679990, 9359980, 18719960]

約数ペア:

[(1, 18719960), (2, 9359980), (4, 4679990), (5, 3743992), (7, 2674280), (8, 2339995), (10, 1871996), (14, 1337140), (20, 935998), (28, 668570), (35, 534856), (40, 467999), (49, 382040), (56, 334285), (70, 267428), (98, 191020), (140, 133714), (196, 95510), (245, 76408), (280, 66857), (392, 47755), (490, 38204), (980, 19102), (1960, 9551)]