638892485

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{269}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 995328000

約数和(自身を除く): 356435515

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 199, 217, 269, 341, 385, 995, 1085, 1345, 1393, 1705, 1883, 2189, 2387, 2959, 6169, 6965, 8339, 9415, 10945, 11935, 14795, 15323, 20713, 30845, 41695, 43183, 53531, 58373, 67859, 76615, 91729, 103565, 215915, 267655, 291865, 339295, 374717, 458645, 475013, 588841, 642103, 1659461, 1873585, 2375065, 2944205, 3210515, 4121887, 8297305, 11616227, 18254071, 20609435, 58081135, 91270355, 127778497, 638892485]

約数ペア:

[(1, 638892485), (5, 127778497), (7, 91270355), (11, 58081135), (31, 20609435), (35, 18254071), (55, 11616227), (77, 8297305), (155, 4121887), (199, 3210515), (217, 2944205), (269, 2375065), (341, 1873585), (385, 1659461), (995, 642103), (1085, 588841), (1345, 475013), (1393, 458645), (1705, 374717), (1883, 339295), (2189, 291865), (2387, 267655), (2959, 215915), (6169, 103565), (6965, 91729), (8339, 76615), (9415, 67859), (10945, 58373), (11935, 53531), (14795, 43183), (15323, 41695), (20713, 30845)]