21021672

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{797}}^1$

素因数の和:970

約数の個数: 64

約数和(自身を含む): 60520320

約数和(自身を除く): 39498648

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 157, 168, 314, 471, 628, 797, 942, 1099, 1256, 1594, 1884, 2198, 2391, 3188, 3297, 3768, 4396, 4782, 5579, 6376, 6594, 8792, 9564, 11158, 13188, 16737, 19128, 22316, 26376, 33474, 44632, 66948, 125129, 133896, 250258, 375387, 500516, 750774, 875903, 1001032, 1501548, 1751806, 2627709, 3003096, 3503612, 5255418, 7007224, 10510836, 21021672]

約数ペア:

[(1, 21021672), (2, 10510836), (3, 7007224), (4, 5255418), (6, 3503612), (7, 3003096), (8, 2627709), (12, 1751806), (14, 1501548), (21, 1001032), (24, 875903), (28, 750774), (42, 500516), (56, 375387), (84, 250258), (157, 133896), (168, 125129), (314, 66948), (471, 44632), (628, 33474), (797, 26376), (942, 22316), (1099, 19128), (1256, 16737), (1594, 13188), (1884, 11158), (2198, 9564), (2391, 8792), (3188, 6594), (3297, 6376), (3768, 5579), (4396, 4782)]