261395280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8443}}^1$

素因数の和:8505

約数の個数: 120

約数和(自身を含む): 898374048

約数和(自身を除く): 636978768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 120, 129, 144, 172, 180, 215, 240, 258, 344, 360, 387, 430, 516, 645, 688, 720, 774, 860, 1032, 1290, 1548, 1720, 1935, 2064, 2580, 3096, 3440, 3870, 5160, 6192, 7740, 8443, 10320, 15480, 16886, 25329, 30960, 33772, 42215, 50658, 67544, 75987, 84430, 101316, 126645, 135088, 151974, 168860, 202632, 253290, 303948, 337720, 363049, 379935, 405264, 506580, 607896, 675440, 726098, 759870, 1013160, 1089147, 1215792, 1452196, 1519740, 1815245, 2026320, 2178294, 2904392, 3039480, 3267441, 3630490, 4356588, 5445735, 5808784, 6078960, 6534882, 7260980, 8713176, 10891470, 13069764, 14521960, 16337205, 17426352, 21782940, 26139528, 29043920, 32674410, 43565880, 52279056, 65348820, 87131760, 130697640, 261395280]

約数ペア:

[(1, 261395280), (2, 130697640), (3, 87131760), (4, 65348820), (5, 52279056), (6, 43565880), (8, 32674410), (9, 29043920), (10, 26139528), (12, 21782940), (15, 17426352), (16, 16337205), (18, 14521960), (20, 13069764), (24, 10891470), (30, 8713176), (36, 7260980), (40, 6534882), (43, 6078960), (45, 5808784), (48, 5445735), (60, 4356588), (72, 3630490), (80, 3267441), (86, 3039480), (90, 2904392), (120, 2178294), (129, 2026320), (144, 1815245), (172, 1519740), (180, 1452196), (215, 1215792), (240, 1089147), (258, 1013160), (344, 759870), (360, 726098), (387, 675440), (430, 607896), (516, 506580), (645, 405264), (688, 379935), (720, 363049), (774, 337720), (860, 303948), (1032, 253290), (1290, 202632), (1548, 168860), (1720, 151974), (1935, 135088), (2064, 126645), (2580, 101316), (3096, 84430), (3440, 75987), (3870, 67544), (5160, 50658), (6192, 42215), (7740, 33772), (8443, 30960), (10320, 25329), (15480, 16886)]