138771920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{35401}}^1$

素因数の和:35428

約数の個数: 60

約数和(自身を含む): 375332004

約数和(自身を除く): 236560084

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, 392, 490, 560, 784, 980, 1960, 3920, 35401, 70802, 141604, 177005, 247807, 283208, 354010, 495614, 566416, 708020, 991228, 1239035, 1416040, 1734649, 1982456, 2478070, 2832080, 3469298, 3964912, 4956140, 6938596, 8673245, 9912280, 13877192, 17346490, 19824560, 27754384, 34692980, 69385960, 138771920]

約数ペア:

[(1, 138771920), (2, 69385960), (4, 34692980), (5, 27754384), (7, 19824560), (8, 17346490), (10, 13877192), (14, 9912280), (16, 8673245), (20, 6938596), (28, 4956140), (35, 3964912), (40, 3469298), (49, 2832080), (56, 2478070), (70, 1982456), (80, 1734649), (98, 1416040), (112, 1239035), (140, 991228), (196, 708020), (245, 566416), (280, 495614), (392, 354010), (490, 283208), (560, 247807), (784, 177005), (980, 141604), (1960, 70802), (3920, 35401)]