28189876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 61979904

約数和(自身を除く): 33790028

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 169, 187, 221, 223, 286, 338, 374, 442, 446, 572, 676, 748, 884, 892, 1859, 2431, 2453, 2873, 2899, 3718, 3791, 4862, 4906, 5746, 5798, 7436, 7582, 9724, 9812, 11492, 11596, 15164, 31603, 31889, 37687, 41701, 49283, 63206, 63778, 75374, 83402, 98566, 126412, 127556, 150748, 166804, 197132, 414557, 542113, 640679, 829114, 1084226, 1281358, 1658228, 2168452, 2562716, 7047469, 14094938, 28189876]

約数ペア:

[(1, 28189876), (2, 14094938), (4, 7047469), (11, 2562716), (13, 2168452), (17, 1658228), (22, 1281358), (26, 1084226), (34, 829114), (44, 640679), (52, 542113), (68, 414557), (143, 197132), (169, 166804), (187, 150748), (221, 127556), (223, 126412), (286, 98566), (338, 83402), (374, 75374), (442, 63778), (446, 63206), (572, 49283), (676, 41701), (748, 37687), (884, 31889), (892, 31603), (1859, 15164), (2431, 11596), (2453, 11492), (2873, 9812), (2899, 9724), (3718, 7582), (3791, 7436), (4862, 5798), (4906, 5746)]