21059269

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 27086400

約数和(自身を除く): 6027131

約数列:

[1, 7, 11, 49, 77, 89, 439, 539, 623, 979, 3073, 4361, 4829, 6853, 21511, 33803, 39071, 47971, 236621, 273497, 429781, 1914479, 3008467, 21059269]

約数ペア:

[(1, 21059269), (7, 3008467), (11, 1914479), (49, 429781), (77, 273497), (89, 236621), (439, 47971), (539, 39071), (623, 33803), (979, 21511), (3073, 6853), (4361, 4829)]