20272791

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 36864000

約数和(自身を除く): 16591209

約数列:

[1, 3, 7, 11, 19, 21, 31, 33, 57, 77, 93, 133, 149, 209, 217, 231, 341, 399, 447, 589, 627, 651, 1023, 1043, 1463, 1639, 1767, 2387, 2831, 3129, 4123, 4389, 4619, 4917, 6479, 7161, 8493, 11473, 12369, 13857, 19437, 19817, 31141, 32333, 34419, 45353, 50809, 59451, 87761, 93423, 96999, 136059, 152427, 217987, 263283, 355663, 614327, 653961, 965371, 1066989, 1842981, 2896113, 6757597, 20272791]

約数ペア:

[(1, 20272791), (3, 6757597), (7, 2896113), (11, 1842981), (19, 1066989), (21, 965371), (31, 653961), (33, 614327), (57, 355663), (77, 263283), (93, 217987), (133, 152427), (149, 136059), (209, 96999), (217, 93423), (231, 87761), (341, 59451), (399, 50809), (447, 45353), (589, 34419), (627, 32333), (651, 31141), (1023, 19817), (1043, 19437), (1463, 13857), (1639, 12369), (1767, 11473), (2387, 8493), (2831, 7161), (3129, 6479), (4123, 4917), (4389, 4619)]