21037660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21467}}^1$

素因数の和:21490

約数の個数: 36

約数和(自身を含む): 51394392

約数和(自身を除く): 30356732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21467, 42934, 85868, 107335, 150269, 214670, 300538, 429340, 601076, 751345, 1051883, 1502690, 2103766, 3005380, 4207532, 5259415, 10518830, 21037660]

約数ペア:

[(1, 21037660), (2, 10518830), (4, 5259415), (5, 4207532), (7, 3005380), (10, 2103766), (14, 1502690), (20, 1051883), (28, 751345), (35, 601076), (49, 429340), (70, 300538), (98, 214670), (140, 150269), (196, 107335), (245, 85868), (490, 42934), (980, 21467)]