1398740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 3424512

約数和(自身を除く): 2025772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 103, 140, 194, 206, 388, 412, 485, 515, 679, 721, 970, 1030, 1358, 1442, 1940, 2060, 2716, 2884, 3395, 3605, 6790, 7210, 9991, 13580, 14420, 19982, 39964, 49955, 69937, 99910, 139874, 199820, 279748, 349685, 699370, 1398740]

約数ペア:

[(1, 1398740), (2, 699370), (4, 349685), (5, 279748), (7, 199820), (10, 139874), (14, 99910), (20, 69937), (28, 49955), (35, 39964), (70, 19982), (97, 14420), (103, 13580), (140, 9991), (194, 7210), (206, 6790), (388, 3605), (412, 3395), (485, 2884), (515, 2716), (679, 2060), (721, 1940), (970, 1442), (1030, 1358)]