257285028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21419}}^1$

素因数の和:21457

約数の個数: 96

約数和(自身を含む): 806077440

約数和(自身を除く): 548792412

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 13, 14, 21, 22, 26, 28, 33, 39, 42, 44, 52, 66, 77, 78, 84, 91, 132, 143, 154, 156, 182, 231, 273, 286, 308, 364, 429, 462, 546, 572, 858, 924, 1001, 1092, 1716, 2002, 3003, 4004, 6006, 12012, 21419, 42838, 64257, 85676, 128514, 149933, 235609, 257028, 278447, 299866, 449799, 471218, 556894, 599732, 706827, 835341, 899598, 942436, 1113788, 1413654, 1649263, 1670682, 1799196, 1949129, 2827308, 3062917, 3298526, 3341364, 3898258, 4947789, 5847387, 6125834, 6597052, 7796516, 9188751, 9895578, 11694774, 12251668, 18377502, 19791156, 21440419, 23389548, 36755004, 42880838, 64321257, 85761676, 128642514, 257285028]

約数ペア:

[(1, 257285028), (2, 128642514), (3, 85761676), (4, 64321257), (6, 42880838), (7, 36755004), (11, 23389548), (12, 21440419), (13, 19791156), (14, 18377502), (21, 12251668), (22, 11694774), (26, 9895578), (28, 9188751), (33, 7796516), (39, 6597052), (42, 6125834), (44, 5847387), (52, 4947789), (66, 3898258), (77, 3341364), (78, 3298526), (84, 3062917), (91, 2827308), (132, 1949129), (143, 1799196), (154, 1670682), (156, 1649263), (182, 1413654), (231, 1113788), (273, 942436), (286, 899598), (308, 835341), (364, 706827), (429, 599732), (462, 556894), (546, 471218), (572, 449799), (858, 299866), (924, 278447), (1001, 257028), (1092, 235609), (1716, 149933), (2002, 128514), (3003, 85676), (4004, 64257), (6006, 42838), (12012, 21419)]