18315080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 47520000

約数和(自身を除く): 29204920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 439, 596, 745, 878, 1043, 1192, 1490, 1756, 2086, 2195, 2980, 3073, 3512, 4172, 4390, 5215, 5960, 6146, 8344, 8780, 10430, 12292, 15365, 17560, 20860, 24584, 30730, 41720, 61460, 65411, 122920, 130822, 261644, 327055, 457877, 523288, 654110, 915754, 1308220, 1831508, 2289385, 2616440, 3663016, 4578770, 9157540, 18315080]

約数ペア:

[(1, 18315080), (2, 9157540), (4, 4578770), (5, 3663016), (7, 2616440), (8, 2289385), (10, 1831508), (14, 1308220), (20, 915754), (28, 654110), (35, 523288), (40, 457877), (56, 327055), (70, 261644), (140, 130822), (149, 122920), (280, 65411), (298, 61460), (439, 41720), (596, 30730), (745, 24584), (878, 20860), (1043, 17560), (1192, 15365), (1490, 12292), (1756, 10430), (2086, 8780), (2195, 8344), (2980, 6146), (3073, 5960), (3512, 5215), (4172, 4390)]