21261162

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27001878

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 53, 74, 78, 106, 111, 139, 159, 222, 278, 318, 417, 481, 689, 834, 962, 1378, 1443, 1807, 1961, 2067, 2886, 3614, 3922, 4134, 5143, 5421, 5883, 7367, 10286, 10842, 11766, 14734, 15429, 22101, 25493, 30858, 44202, 50986, 66859, 76479, 95771, 133718, 152958, 191542, 200577, 272579, 287313, 401154, 545158, 574626, 817737, 1635474, 3543527, 7087054, 10630581, 21261162]

約数ペア:

[(1, 21261162), (2, 10630581), (3, 7087054), (6, 3543527), (13, 1635474), (26, 817737), (37, 574626), (39, 545158), (53, 401154), (74, 287313), (78, 272579), (106, 200577), (111, 191542), (139, 152958), (159, 133718), (222, 95771), (278, 76479), (318, 66859), (417, 50986), (481, 44202), (689, 30858), (834, 25493), (962, 22101), (1378, 15429), (1443, 14734), (1807, 11766), (1961, 10842), (2067, 10286), (2886, 7367), (3614, 5883), (3922, 5421), (4134, 5143)]