20991648

素因数分解:

$2^5\times 3^1\times {\mathrm{449}}^1\times {\mathrm{487}}^1$

素因数の和:949

約数の個数: 48

約数和(自身を含む): 55339200

約数和(自身を除く): 34347552

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 449, 487, 898, 974, 1347, 1461, 1796, 1948, 2694, 2922, 3592, 3896, 5388, 5844, 7184, 7792, 10776, 11688, 14368, 15584, 21552, 23376, 43104, 46752, 218663, 437326, 655989, 874652, 1311978, 1749304, 2623956, 3498608, 5247912, 6997216, 10495824, 20991648]

約数ペア:

[(1, 20991648), (2, 10495824), (3, 6997216), (4, 5247912), (6, 3498608), (8, 2623956), (12, 1749304), (16, 1311978), (24, 874652), (32, 655989), (48, 437326), (96, 218663), (449, 46752), (487, 43104), (898, 23376), (974, 21552), (1347, 15584), (1461, 14368), (1796, 11688), (1948, 10776), (2694, 7792), (2922, 7184), (3592, 5844), (3896, 5388)]