21564963

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7283}}^1$

素因数の和:7343

約数の個数: 24

約数和(自身を含む): 36361728

約数和(自身を除く): 14796765

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7283, 21849, 50981, 65547, 152943, 342301, 458829, 1026903, 2396107, 3080709, 7188321, 21564963]

約数ペア:

[(1, 21564963), (3, 7188321), (7, 3080709), (9, 2396107), (21, 1026903), (47, 458829), (63, 342301), (141, 152943), (329, 65547), (423, 50981), (987, 21849), (2961, 7283)]