256183207

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 309450240

約数和(自身を除く): 53267033

約数列:

[1, 7, 43, 73, 89, 131, 301, 511, 623, 917, 3139, 3827, 5633, 6497, 9563, 11659, 21973, 26789, 39431, 45479, 66941, 81613, 279371, 411209, 501337, 851107, 1955597, 2878463, 3509359, 5957749, 36597601, 256183207]

約数ペア:

[(1, 256183207), (7, 36597601), (43, 5957749), (73, 3509359), (89, 2878463), (131, 1955597), (301, 851107), (511, 501337), (623, 411209), (917, 279371), (3139, 81613), (3827, 66941), (5633, 45479), (6497, 39431), (9563, 26789), (11659, 21973)]