647017345

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{17807}}^1$

素因数の和:17881

約数の個数: 24

約数和(自身を含む): 860340096

約数和(自身を除く): 213322751

約数列:

[1, 5, 13, 43, 65, 169, 215, 559, 845, 2795, 7267, 17807, 36335, 89035, 231491, 765701, 1157455, 3009383, 3828505, 9954113, 15046915, 49770565, 129403469, 647017345]

約数ペア:

[(1, 647017345), (5, 129403469), (13, 49770565), (43, 15046915), (65, 9954113), (169, 3828505), (215, 3009383), (559, 1157455), (845, 765701), (2795, 231491), (7267, 89035), (17807, 36335)]