1780212120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1\times {\mathrm{1289}}^1$

素因数の和:1997

約数の個数: 128

約数和(自身を含む): 5667537600

約数和(自身を除く): 3887325480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 677, 680, 1020, 1289, 1354, 2031, 2040, 2578, 2708, 3385, 3867, 4062, 5156, 5416, 6445, 6770, 7734, 8124, 10155, 10312, 11509, 12890, 13540, 15468, 16248, 19335, 20310, 21913, 23018, 25780, 27080, 30936, 34527, 38670, 40620, 43826, 46036, 51560, 57545, 65739, 69054, 77340, 81240, 87652, 92072, 109565, 115090, 131478, 138108, 154680, 172635, 175304, 219130, 230180, 262956, 276216, 328695, 345270, 438260, 460360, 525912, 657390, 690540, 872653, 876520, 1314780, 1381080, 1745306, 2617959, 2629560, 3490612, 4363265, 5235918, 6981224, 8726530, 10471836, 13089795, 14835101, 17453060, 20943672, 26179590, 29670202, 34906120, 44505303, 52359180, 59340404, 74175505, 89010606, 104718360, 118680808, 148351010, 178021212, 222526515, 296702020, 356042424, 445053030, 593404040, 890106060, 1780212120]

約数ペア:

[(1, 1780212120), (2, 890106060), (3, 593404040), (4, 445053030), (5, 356042424), (6, 296702020), (8, 222526515), (10, 178021212), (12, 148351010), (15, 118680808), (17, 104718360), (20, 89010606), (24, 74175505), (30, 59340404), (34, 52359180), (40, 44505303), (51, 34906120), (60, 29670202), (68, 26179590), (85, 20943672), (102, 17453060), (120, 14835101), (136, 13089795), (170, 10471836), (204, 8726530), (255, 6981224), (340, 5235918), (408, 4363265), (510, 3490612), (677, 2629560), (680, 2617959), (1020, 1745306), (1289, 1381080), (1354, 1314780), (2031, 876520), (2040, 872653), (2578, 690540), (2708, 657390), (3385, 525912), (3867, 460360), (4062, 438260), (5156, 345270), (5416, 328695), (6445, 276216), (6770, 262956), (7734, 230180), (8124, 219130), (10155, 175304), (10312, 172635), (11509, 154680), (12890, 138108), (13540, 131478), (15468, 115090), (16248, 109565), (19335, 92072), (20310, 87652), (21913, 81240), (23018, 77340), (25780, 69054), (27080, 65739), (30936, 57545), (34527, 51560), (38670, 46036), (40620, 43826)]