21660660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17191}}^1$

素因数の和:17213

約数の個数: 72

約数和(自身を含む): 75094656

約数和(自身を除く): 53433996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17191, 34382, 51573, 68764, 85955, 103146, 120337, 154719, 171910, 206292, 240674, 257865, 309438, 343820, 361011, 481348, 515730, 601685, 618876, 722022, 773595, 1031460, 1083033, 1203370, 1444044, 1547190, 1805055, 2166066, 2406740, 3094380, 3610110, 4332132, 5415165, 7220220, 10830330, 21660660]

約数ペア:

[(1, 21660660), (2, 10830330), (3, 7220220), (4, 5415165), (5, 4332132), (6, 3610110), (7, 3094380), (9, 2406740), (10, 2166066), (12, 1805055), (14, 1547190), (15, 1444044), (18, 1203370), (20, 1083033), (21, 1031460), (28, 773595), (30, 722022), (35, 618876), (36, 601685), (42, 515730), (45, 481348), (60, 361011), (63, 343820), (70, 309438), (84, 257865), (90, 240674), (105, 206292), (126, 171910), (140, 154719), (180, 120337), (210, 103146), (252, 85955), (315, 68764), (420, 51573), (630, 34382), (1260, 17191)]