21155365

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{54949}}^1$

素因数の和:54972

約数の個数: 16

約数和(自身を含む): 31651200

約数和(自身を除く): 10495835

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 54949, 274745, 384643, 604439, 1923215, 3022195, 4231073, 21155365]

約数ペア:

[(1, 21155365), (5, 4231073), (7, 3022195), (11, 1923215), (35, 604439), (55, 384643), (77, 274745), (385, 54949)]