18888943591

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{9533}}^1$

素因数の和:9991

約数の個数: 32

約数和(自身を含む): 23313604608

約数和(自身を除く): 4424661017

約数列:

[1, 7, 23, 31, 161, 217, 397, 713, 2779, 4991, 9131, 9533, 12307, 63917, 66731, 86149, 219259, 283061, 295523, 1534813, 1981427, 2068661, 3784601, 6797029, 26492207, 47579203, 87045823, 117322631, 609320761, 821258417, 2698420513, 18888943591]

約数ペア:

[(1, 18888943591), (7, 2698420513), (23, 821258417), (31, 609320761), (161, 117322631), (217, 87045823), (397, 47579203), (713, 26492207), (2779, 6797029), (4991, 3784601), (9131, 2068661), (9533, 1981427), (12307, 1534813), (63917, 295523), (66731, 283061), (86149, 219259)]