21199904

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{263}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 45904320

約数和(自身を除く): 24704416

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 229, 263, 352, 458, 526, 916, 1052, 1832, 2104, 2519, 2893, 3664, 4208, 5038, 5786, 7328, 8416, 10076, 11572, 20152, 23144, 40304, 46288, 60227, 80608, 92576, 120454, 240908, 481816, 662497, 963632, 1324994, 1927264, 2649988, 5299976, 10599952, 21199904]

約数ペア:

[(1, 21199904), (2, 10599952), (4, 5299976), (8, 2649988), (11, 1927264), (16, 1324994), (22, 963632), (32, 662497), (44, 481816), (88, 240908), (176, 120454), (229, 92576), (263, 80608), (352, 60227), (458, 46288), (526, 40304), (916, 23144), (1052, 20152), (1832, 11572), (2104, 10076), (2519, 8416), (2893, 7328), (3664, 5786), (4208, 5038)]