19857838

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 41306760

約数和(自身を除く): 21448922

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 49, 77, 91, 98, 109, 143, 154, 169, 182, 218, 286, 338, 539, 637, 763, 1001, 1078, 1183, 1199, 1274, 1417, 1526, 1859, 2002, 2366, 2398, 2834, 3718, 5341, 7007, 8281, 8393, 9919, 10682, 13013, 14014, 15587, 16562, 16786, 18421, 19838, 26026, 31174, 36842, 58751, 69433, 91091, 109109, 117502, 128947, 138866, 182182, 202631, 218218, 257894, 405262, 763763, 902629, 1418417, 1527526, 1805258, 2836834, 9928919, 19857838]

約数ペア:

[(1, 19857838), (2, 9928919), (7, 2836834), (11, 1805258), (13, 1527526), (14, 1418417), (22, 902629), (26, 763763), (49, 405262), (77, 257894), (91, 218218), (98, 202631), (109, 182182), (143, 138866), (154, 128947), (169, 117502), (182, 109109), (218, 91091), (286, 69433), (338, 58751), (539, 36842), (637, 31174), (763, 26026), (1001, 19838), (1078, 18421), (1183, 16786), (1199, 16562), (1274, 15587), (1417, 14014), (1526, 13013), (1859, 10682), (2002, 9919), (2366, 8393), (2398, 8281), (2834, 7007), (3718, 5341)]