20641320

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8191}}^1$

素因数の和:8215

約数の個数: 96

約数和(自身を含む): 76677120

約数和(自身を除く): 56035800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8191, 16382, 24573, 32764, 40955, 49146, 57337, 65528, 73719, 81910, 98292, 114674, 122865, 147438, 163820, 172011, 196584, 229348, 245730, 286685, 294876, 327640, 344022, 368595, 458696, 491460, 516033, 573370, 589752, 688044, 737190, 860055, 982920, 1032066, 1146740, 1376088, 1474380, 1720110, 2064132, 2293480, 2580165, 2948760, 3440220, 4128264, 5160330, 6880440, 10320660, 20641320]

約数ペア:

[(1, 20641320), (2, 10320660), (3, 6880440), (4, 5160330), (5, 4128264), (6, 3440220), (7, 2948760), (8, 2580165), (9, 2293480), (10, 2064132), (12, 1720110), (14, 1474380), (15, 1376088), (18, 1146740), (20, 1032066), (21, 982920), (24, 860055), (28, 737190), (30, 688044), (35, 589752), (36, 573370), (40, 516033), (42, 491460), (45, 458696), (56, 368595), (60, 344022), (63, 327640), (70, 294876), (72, 286685), (84, 245730), (90, 229348), (105, 196584), (120, 172011), (126, 163820), (140, 147438), (168, 122865), (180, 114674), (210, 98292), (252, 81910), (280, 73719), (315, 65528), (360, 57337), (420, 49146), (504, 40955), (630, 32764), (840, 24573), (1260, 16382), (2520, 8191)]