18978542

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37507}}^1$

素因数の和:37543

約数の個数: 16

約数和(自身を含む): 32406912

約数和(自身を除く): 13428370

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 37507, 75014, 412577, 825154, 862661, 1725322, 9489271, 18978542]

約数ペア:

[(1, 18978542), (2, 9489271), (11, 1725322), (22, 862661), (23, 825154), (46, 412577), (253, 75014), (506, 37507)]