12980720

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{769}}^1$

素因数の和:993

約数の個数: 40

約数和(自身を含む): 30362640

約数和(自身を除く): 17381920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 769, 844, 1055, 1538, 1688, 2110, 3076, 3376, 3845, 4220, 6152, 7690, 8440, 12304, 15380, 16880, 30760, 61520, 162259, 324518, 649036, 811295, 1298072, 1622590, 2596144, 3245180, 6490360, 12980720]

約数ペア:

[(1, 12980720), (2, 6490360), (4, 3245180), (5, 2596144), (8, 1622590), (10, 1298072), (16, 811295), (20, 649036), (40, 324518), (80, 162259), (211, 61520), (422, 30760), (769, 16880), (844, 15380), (1055, 12304), (1538, 8440), (1688, 7690), (2110, 6152), (3076, 4220), (3376, 3845)]