257693824

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:789

約数の個数: 64

約数和(自身を含む): 536014080

約数和(自身を除く): 278320256

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 101, 124, 128, 202, 248, 404, 496, 643, 808, 992, 1286, 1616, 1984, 2572, 3131, 3232, 3968, 5144, 6262, 6464, 10288, 12524, 12928, 19933, 20576, 25048, 39866, 41152, 50096, 64943, 79732, 82304, 100192, 129886, 159464, 200384, 259772, 318928, 400768, 519544, 637856, 1039088, 1275712, 2013233, 2078176, 2551424, 4026466, 4156352, 8052932, 8312704, 16105864, 32211728, 64423456, 128846912, 257693824]

約数ペア:

[(1, 257693824), (2, 128846912), (4, 64423456), (8, 32211728), (16, 16105864), (31, 8312704), (32, 8052932), (62, 4156352), (64, 4026466), (101, 2551424), (124, 2078176), (128, 2013233), (202, 1275712), (248, 1039088), (404, 637856), (496, 519544), (643, 400768), (808, 318928), (992, 259772), (1286, 200384), (1616, 159464), (1984, 129886), (2572, 100192), (3131, 82304), (3232, 79732), (3968, 64943), (5144, 50096), (6262, 41152), (6464, 39866), (10288, 25048), (12524, 20576), (12928, 19933)]