21887418

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 51464160

約数和(自身を除く): 29576742

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 109, 147, 218, 294, 327, 654, 683, 763, 1366, 1526, 2049, 2289, 4098, 4578, 4781, 5341, 9562, 10682, 14343, 16023, 28686, 32046, 33467, 66934, 74447, 100401, 148894, 200802, 223341, 446682, 521129, 1042258, 1563387, 3126774, 3647903, 7295806, 10943709, 21887418]

約数ペア:

[(1, 21887418), (2, 10943709), (3, 7295806), (6, 3647903), (7, 3126774), (14, 1563387), (21, 1042258), (42, 521129), (49, 446682), (98, 223341), (109, 200802), (147, 148894), (218, 100401), (294, 74447), (327, 66934), (654, 33467), (683, 32046), (763, 28686), (1366, 16023), (1526, 14343), (2049, 10682), (2289, 9562), (4098, 5341), (4578, 4781)]