21229383

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 33490944

約数和(自身を除く): 12261561

約数列:

[1, 3, 7, 21, 47, 137, 141, 157, 329, 411, 471, 959, 987, 1099, 2877, 3297, 6439, 7379, 19317, 21509, 22137, 45073, 51653, 64527, 135219, 150563, 154959, 451689, 1010923, 3032769, 7076461, 21229383]

約数ペア:

[(1, 21229383), (3, 7076461), (7, 3032769), (21, 1010923), (47, 451689), (137, 154959), (141, 150563), (157, 135219), (329, 64527), (411, 51653), (471, 45073), (959, 22137), (987, 21509), (1099, 19317), (2877, 7379), (3297, 6439)]