19390228

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 20970092

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 109, 143, 218, 286, 311, 436, 572, 622, 1199, 1244, 1417, 2398, 2834, 3421, 4043, 4796, 5668, 6842, 8086, 13684, 15587, 16172, 31174, 33899, 44473, 62348, 67798, 88946, 135596, 177892, 372889, 440687, 745778, 881374, 1491556, 1762748, 4847557, 9695114, 19390228]

約数ペア:

[(1, 19390228), (2, 9695114), (4, 4847557), (11, 1762748), (13, 1491556), (22, 881374), (26, 745778), (44, 440687), (52, 372889), (109, 177892), (143, 135596), (218, 88946), (286, 67798), (311, 62348), (436, 44473), (572, 33899), (622, 31174), (1199, 16172), (1244, 15587), (1417, 13684), (2398, 8086), (2834, 6842), (3421, 5668), (4043, 4796)]