18907148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 37895424

約数和(自身を除く): 18988276

約数列:

[1, 2, 4, 13, 26, 31, 37, 52, 62, 74, 124, 148, 317, 403, 481, 634, 806, 962, 1147, 1268, 1612, 1924, 2294, 4121, 4588, 8242, 9827, 11729, 14911, 16484, 19654, 23458, 29822, 39308, 46916, 59644, 127751, 152477, 255502, 304954, 363599, 511004, 609908, 727198, 1454396, 4726787, 9453574, 18907148]

約数ペア:

[(1, 18907148), (2, 9453574), (4, 4726787), (13, 1454396), (26, 727198), (31, 609908), (37, 511004), (52, 363599), (62, 304954), (74, 255502), (124, 152477), (148, 127751), (317, 59644), (403, 46916), (481, 39308), (634, 29822), (806, 23458), (962, 19654), (1147, 16484), (1268, 14911), (1612, 11729), (1924, 9827), (2294, 8242), (4121, 4588)]