21000427882

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78948977}}^1$

素因数の和:78949005

約数の個数: 16

約数和(自身を含む): 37895509440

約数和(自身を除く): 16895081558

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78948977, 157897954, 552642839, 1105285678, 1500030563, 3000061126, 10500213941, 21000427882]

約数ペア:

[(1, 21000427882), (2, 10500213941), (7, 3000061126), (14, 1500030563), (19, 1105285678), (38, 552642839), (133, 157897954), (266, 78948977)]