20972182

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 42467328

約数和(自身を除く): 21495146

約数列:

[1, 2, 7, 11, 14, 22, 23, 31, 46, 62, 77, 154, 161, 191, 217, 253, 322, 341, 382, 434, 506, 682, 713, 1337, 1426, 1771, 2101, 2387, 2674, 3542, 4202, 4393, 4774, 4991, 5921, 7843, 8786, 9982, 11842, 14707, 15686, 29414, 30751, 41447, 48323, 54901, 61502, 65131, 82894, 96646, 109802, 130262, 136183, 272366, 338261, 455917, 676522, 911834, 953281, 1498013, 1906562, 2996026, 10486091, 20972182]

約数ペア:

[(1, 20972182), (2, 10486091), (7, 2996026), (11, 1906562), (14, 1498013), (22, 953281), (23, 911834), (31, 676522), (46, 455917), (62, 338261), (77, 272366), (154, 136183), (161, 130262), (191, 109802), (217, 96646), (253, 82894), (322, 65131), (341, 61502), (382, 54901), (434, 48323), (506, 41447), (682, 30751), (713, 29414), (1337, 15686), (1426, 14707), (1771, 11842), (2101, 9982), (2387, 8786), (2674, 7843), (3542, 5921), (4202, 4991), (4393, 4774)]