261157680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{51817}}^1$

素因数の和:51843

約数の個数: 120

約数和(自身を含む): 1002367392

約数和(自身を除く): 741209712

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 51817, 103634, 155451, 207268, 259085, 310902, 362719, 414536, 466353, 518170, 621804, 725438, 777255, 829072, 932706, 1036340, 1088157, 1243608, 1450876, 1554510, 1813595, 1865412, 2072680, 2176314, 2331765, 2487216, 2901752, 3109020, 3264471, 3627190, 3730824, 4145360, 4352628, 4663530, 5440785, 5803504, 6218040, 6528942, 7254380, 7461648, 8705256, 9327060, 10881570, 12436080, 13057884, 14508760, 16322355, 17410512, 18654120, 21763140, 26115768, 29017520, 32644710, 37308240, 43526280, 52231536, 65289420, 87052560, 130578840, 261157680]

約数ペア:

[(1, 261157680), (2, 130578840), (3, 87052560), (4, 65289420), (5, 52231536), (6, 43526280), (7, 37308240), (8, 32644710), (9, 29017520), (10, 26115768), (12, 21763140), (14, 18654120), (15, 17410512), (16, 16322355), (18, 14508760), (20, 13057884), (21, 12436080), (24, 10881570), (28, 9327060), (30, 8705256), (35, 7461648), (36, 7254380), (40, 6528942), (42, 6218040), (45, 5803504), (48, 5440785), (56, 4663530), (60, 4352628), (63, 4145360), (70, 3730824), (72, 3627190), (80, 3264471), (84, 3109020), (90, 2901752), (105, 2487216), (112, 2331765), (120, 2176314), (126, 2072680), (140, 1865412), (144, 1813595), (168, 1554510), (180, 1450876), (210, 1243608), (240, 1088157), (252, 1036340), (280, 932706), (315, 829072), (336, 777255), (360, 725438), (420, 621804), (504, 518170), (560, 466353), (630, 414536), (720, 362719), (840, 310902), (1008, 259085), (1260, 207268), (1680, 155451), (2520, 103634), (5040, 51817)]