19901880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{937}}^1$

素因数の和:1013

約数の個数: 96

約数和(自身を含む): 65847600

約数和(自身を除く): 45945720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 59, 60, 72, 90, 118, 120, 177, 180, 236, 295, 354, 360, 472, 531, 590, 708, 885, 937, 1062, 1180, 1416, 1770, 1874, 2124, 2360, 2655, 2811, 3540, 3748, 4248, 4685, 5310, 5622, 7080, 7496, 8433, 9370, 10620, 11244, 14055, 16866, 18740, 21240, 22488, 28110, 33732, 37480, 42165, 55283, 56220, 67464, 84330, 110566, 112440, 165849, 168660, 221132, 276415, 331698, 337320, 442264, 497547, 552830, 663396, 829245, 995094, 1105660, 1326792, 1658490, 1990188, 2211320, 2487735, 3316980, 3980376, 4975470, 6633960, 9950940, 19901880]

約数ペア:

[(1, 19901880), (2, 9950940), (3, 6633960), (4, 4975470), (5, 3980376), (6, 3316980), (8, 2487735), (9, 2211320), (10, 1990188), (12, 1658490), (15, 1326792), (18, 1105660), (20, 995094), (24, 829245), (30, 663396), (36, 552830), (40, 497547), (45, 442264), (59, 337320), (60, 331698), (72, 276415), (90, 221132), (118, 168660), (120, 165849), (177, 112440), (180, 110566), (236, 84330), (295, 67464), (354, 56220), (360, 55283), (472, 42165), (531, 37480), (590, 33732), (708, 28110), (885, 22488), (937, 21240), (1062, 18740), (1180, 16866), (1416, 14055), (1770, 11244), (1874, 10620), (2124, 9370), (2360, 8433), (2655, 7496), (2811, 7080), (3540, 5622), (3748, 5310), (4248, 4685)]