19907167

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2027}}^1$

素因数の和:2118

約数の個数: 16

約数和(自身を含む): 24141312

約数和(自身を除く): 4234145

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2027, 9821, 14189, 46621, 123647, 326347, 865529, 2843881, 19907167]

約数ペア:

[(1, 19907167), (7, 2843881), (23, 865529), (61, 326347), (161, 123647), (427, 46621), (1403, 14189), (2027, 9821)]