21264370

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3217}}^1$

素因数の和:3885

約数の個数: 16

約数和(自身を含む): 38345688

約数和(自身を除く): 17081318

約数列:

[1, 2, 5, 10, 661, 1322, 3217, 3305, 6434, 6610, 16085, 32170, 2126437, 4252874, 10632185, 21264370]

約数ペア:

[(1, 21264370), (2, 10632185), (5, 4252874), (10, 2126437), (661, 32170), (1322, 16085), (3217, 6610), (3305, 6434)]