290401979

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 357350400

約数和(自身を除く): 66948421

約数列:

[1, 7, 23, 49, 131, 161, 281, 343, 917, 1127, 1967, 3013, 6419, 6463, 7889, 13769, 21091, 36811, 44933, 45241, 96383, 147637, 257677, 316687, 846653, 1033459, 1803739, 2216809, 5926571, 12626173, 41485997, 290401979]

約数ペア:

[(1, 290401979), (7, 41485997), (23, 12626173), (49, 5926571), (131, 2216809), (161, 1803739), (281, 1033459), (343, 846653), (917, 316687), (1127, 257677), (1967, 147637), (3013, 96383), (6419, 45241), (6463, 44933), (7889, 36811), (13769, 21091)]