21340620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16937}}^1$

素因数の和:16959

約数の個数: 72

約数和(自身を含む): 73985184

約数和(自身を除く): 52644564

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, 16937, 33874, 50811, 67748, 84685, 101622, 118559, 152433, 169370, 203244, 237118, 254055, 304866, 338740, 355677, 474236, 508110, 592795, 609732, 711354, 762165, 1016220, 1067031, 1185590, 1422708, 1524330, 1778385, 2134062, 2371180, 3048660, 3556770, 4268124, 5335155, 7113540, 10670310, 21340620]

約数ペア:

[(1, 21340620), (2, 10670310), (3, 7113540), (4, 5335155), (5, 4268124), (6, 3556770), (7, 3048660), (9, 2371180), (10, 2134062), (12, 1778385), (14, 1524330), (15, 1422708), (18, 1185590), (20, 1067031), (21, 1016220), (28, 762165), (30, 711354), (35, 609732), (36, 592795), (42, 508110), (45, 474236), (60, 355677), (63, 338740), (70, 304866), (84, 254055), (90, 237118), (105, 203244), (126, 169370), (140, 152433), (180, 118559), (210, 101622), (252, 84685), (315, 67748), (420, 50811), (630, 33874), (1260, 16937)]