20965648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{857}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23718992

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 139, 176, 278, 556, 857, 1112, 1529, 1714, 2224, 3058, 3428, 6116, 6856, 9427, 12232, 13712, 18854, 24464, 37708, 75416, 119123, 150832, 238246, 476492, 952984, 1310353, 1905968, 2620706, 5241412, 10482824, 20965648]

約数ペア:

[(1, 20965648), (2, 10482824), (4, 5241412), (8, 2620706), (11, 1905968), (16, 1310353), (22, 952984), (44, 476492), (88, 238246), (139, 150832), (176, 119123), (278, 75416), (556, 37708), (857, 24464), (1112, 18854), (1529, 13712), (1714, 12232), (2224, 9427), (3058, 6856), (3428, 6116)]