20556976

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{431}}^1$

素因数の和:721

約数の個数: 40

約数和(自身を含む): 43711488

約数和(自身を除く): 23154512

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 271, 431, 542, 862, 1084, 1724, 2168, 2981, 3448, 4336, 4741, 5962, 6896, 9482, 11924, 18964, 23848, 37928, 47696, 75856, 116801, 233602, 467204, 934408, 1284811, 1868816, 2569622, 5139244, 10278488, 20556976]

約数ペア:

[(1, 20556976), (2, 10278488), (4, 5139244), (8, 2569622), (11, 1868816), (16, 1284811), (22, 934408), (44, 467204), (88, 233602), (176, 116801), (271, 75856), (431, 47696), (542, 37928), (862, 23848), (1084, 18964), (1724, 11924), (2168, 9482), (2981, 6896), (3448, 5962), (4336, 4741)]