20001960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5051}}^1$

素因数の和:5079

約数の個数: 96

約数和(自身を含む): 70930080

約数和(自身を除く): 50928120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 5051, 10102, 15153, 20204, 25255, 30306, 40408, 45459, 50510, 55561, 60612, 75765, 90918, 101020, 111122, 121224, 151530, 166683, 181836, 202040, 222244, 227295, 277805, 303060, 333366, 363672, 444488, 454590, 500049, 555610, 606120, 666732, 833415, 909180, 1000098, 1111220, 1333464, 1666830, 1818360, 2000196, 2222440, 2500245, 3333660, 4000392, 5000490, 6667320, 10000980, 20001960]

約数ペア:

[(1, 20001960), (2, 10000980), (3, 6667320), (4, 5000490), (5, 4000392), (6, 3333660), (8, 2500245), (9, 2222440), (10, 2000196), (11, 1818360), (12, 1666830), (15, 1333464), (18, 1111220), (20, 1000098), (22, 909180), (24, 833415), (30, 666732), (33, 606120), (36, 555610), (40, 500049), (44, 454590), (45, 444488), (55, 363672), (60, 333366), (66, 303060), (72, 277805), (88, 227295), (90, 222244), (99, 202040), (110, 181836), (120, 166683), (132, 151530), (165, 121224), (180, 111122), (198, 101020), (220, 90918), (264, 75765), (330, 60612), (360, 55561), (396, 50510), (440, 45459), (495, 40408), (660, 30306), (792, 25255), (990, 20204), (1320, 15153), (1980, 10102), (3960, 5051)]