21379804

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{907}}^1$

素因数の和:1065

約数の個数: 24

約数和(自身を含む): 38441088

約数和(自身を除く): 17061284

約数列:

[1, 2, 4, 71, 83, 142, 166, 284, 332, 907, 1814, 3628, 5893, 11786, 23572, 64397, 75281, 128794, 150562, 257588, 301124, 5344951, 10689902, 21379804]

約数ペア:

[(1, 21379804), (2, 10689902), (4, 5344951), (71, 301124), (83, 257588), (142, 150562), (166, 128794), (284, 75281), (332, 64397), (907, 23572), (1814, 11786), (3628, 5893)]