20820786

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 49612800

約数和(自身を除く): 28792014

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 67, 98, 134, 147, 151, 201, 294, 302, 343, 402, 453, 469, 686, 906, 938, 1029, 1057, 1407, 2058, 2114, 2814, 3171, 3283, 6342, 6566, 7399, 9849, 10117, 14798, 19698, 20234, 22197, 22981, 30351, 44394, 45962, 51793, 60702, 68943, 70819, 103586, 137886, 141638, 155379, 212457, 310758, 424914, 495733, 991466, 1487199, 2974398, 3470131, 6940262, 10410393, 20820786]

約数ペア:

[(1, 20820786), (2, 10410393), (3, 6940262), (6, 3470131), (7, 2974398), (14, 1487199), (21, 991466), (42, 495733), (49, 424914), (67, 310758), (98, 212457), (134, 155379), (147, 141638), (151, 137886), (201, 103586), (294, 70819), (302, 68943), (343, 60702), (402, 51793), (453, 45962), (469, 44394), (686, 30351), (906, 22981), (938, 22197), (1029, 20234), (1057, 19698), (1407, 14798), (2058, 10117), (2114, 9849), (2814, 7399), (3171, 6566), (3283, 6342)]