21157543

素因数分解:

${\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 23708160

約数和(自身を除く): 2550617

約数列:

[1, 11, 79, 97, 251, 869, 1067, 2761, 7663, 19829, 24347, 84293, 218119, 267817, 1923413, 21157543]

約数ペア:

[(1, 21157543), (11, 1923413), (79, 267817), (97, 218119), (251, 84293), (869, 24347), (1067, 19829), (2761, 7663)]