21043418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{13103}}^1$

素因数の和:13189

約数の個数: 16

約数和(自身を含む): 34909056

約数和(自身を除く): 13865638

約数列:

[1, 2, 11, 22, 73, 146, 803, 1606, 13103, 26206, 144133, 288266, 956519, 1913038, 10521709, 21043418]

約数ペア:

[(1, 21043418), (2, 10521709), (11, 1913038), (22, 956519), (73, 288266), (146, 144133), (803, 26206), (1606, 13103)]