20123290456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{62459}}^1$

素因数の和:62608

約数の個数: 64

約数和(自身を含む): 42093043200

約数和(自身を除く): 21969752744

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 103, 136, 184, 206, 391, 412, 782, 824, 1564, 1751, 2369, 3128, 3502, 4738, 7004, 9476, 14008, 18952, 40273, 62459, 80546, 124918, 161092, 249836, 322184, 499672, 1061803, 1436557, 2123606, 2873114, 4247212, 5746228, 6433277, 8494424, 11492456, 12866554, 24421469, 25733108, 48842938, 51466216, 97685876, 109365709, 147965371, 195371752, 218731418, 295930742, 437462836, 591861484, 874925672, 1183722968, 2515411307, 5030822614, 10061645228, 20123290456]

約数ペア:

[(1, 20123290456), (2, 10061645228), (4, 5030822614), (8, 2515411307), (17, 1183722968), (23, 874925672), (34, 591861484), (46, 437462836), (68, 295930742), (92, 218731418), (103, 195371752), (136, 147965371), (184, 109365709), (206, 97685876), (391, 51466216), (412, 48842938), (782, 25733108), (824, 24421469), (1564, 12866554), (1751, 11492456), (2369, 8494424), (3128, 6433277), (3502, 5746228), (4738, 4247212), (7004, 2873114), (9476, 2123606), (14008, 1436557), (18952, 1061803), (40273, 499672), (62459, 322184), (80546, 249836), (124918, 161092)]