21290005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{1439}}^1$

素因数の和:1724

約数の個数: 16

約数和(自身を含む): 27993600

約数和(自身を除く): 6703595

約数列:

[1, 5, 11, 55, 269, 1345, 1439, 2959, 7195, 14795, 15829, 79145, 387091, 1935455, 4258001, 21290005]

約数ペア:

[(1, 21290005), (5, 4258001), (11, 1935455), (55, 387091), (269, 79145), (1345, 15829), (1439, 14795), (2959, 7195)]