278766334

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^2\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 72

約数和(自身を含む): 543821040

約数和(自身を除く): 265054706

約数列:

[1, 2, 7, 11, 14, 22, 43, 77, 86, 89, 121, 154, 178, 242, 301, 473, 602, 623, 847, 946, 979, 1246, 1694, 1849, 1958, 3311, 3698, 3827, 5203, 6622, 6853, 7654, 10406, 10769, 12943, 13706, 20339, 21538, 25886, 26789, 36421, 40678, 42097, 53578, 72842, 75383, 84194, 142373, 150766, 164561, 223729, 284746, 294679, 329122, 447458, 463067, 589358, 926134, 1151927, 1566103, 1810171, 2303854, 3132206, 3241469, 3620342, 6482938, 12671197, 19911881, 25342394, 39823762, 139383167, 278766334]

約数ペア:

[(1, 278766334), (2, 139383167), (7, 39823762), (11, 25342394), (14, 19911881), (22, 12671197), (43, 6482938), (77, 3620342), (86, 3241469), (89, 3132206), (121, 2303854), (154, 1810171), (178, 1566103), (242, 1151927), (301, 926134), (473, 589358), (602, 463067), (623, 447458), (847, 329122), (946, 294679), (979, 284746), (1246, 223729), (1694, 164561), (1849, 150766), (1958, 142373), (3311, 84194), (3698, 75383), (3827, 72842), (5203, 53578), (6622, 42097), (6853, 40678), (7654, 36421), (10406, 26789), (10769, 25886), (12943, 21538), (13706, 20339)]