20684776

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 46512000

約数和(自身を除く): 25827224

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 67, 74, 134, 148, 149, 259, 268, 296, 298, 469, 518, 536, 596, 938, 1036, 1043, 1192, 1876, 2072, 2086, 2479, 3752, 4172, 4958, 5513, 8344, 9916, 9983, 11026, 17353, 19832, 19966, 22052, 34706, 38591, 39932, 44104, 69412, 69881, 77182, 79864, 138824, 139762, 154364, 279524, 308728, 369371, 559048, 738742, 1477484, 2585597, 2954968, 5171194, 10342388, 20684776]

約数ペア:

[(1, 20684776), (2, 10342388), (4, 5171194), (7, 2954968), (8, 2585597), (14, 1477484), (28, 738742), (37, 559048), (56, 369371), (67, 308728), (74, 279524), (134, 154364), (148, 139762), (149, 138824), (259, 79864), (268, 77182), (296, 69881), (298, 69412), (469, 44104), (518, 39932), (536, 38591), (596, 34706), (938, 22052), (1036, 19966), (1043, 19832), (1192, 17353), (1876, 11026), (2072, 9983), (2086, 9916), (2479, 8344), (3752, 5513), (4172, 4958)]