21389764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{5857}}^1$

素因数の和:5955

約数の個数: 24

約数和(自身を含む): 41334048

約数和(自身を除く): 19944284

約数列:

[1, 2, 4, 11, 22, 44, 83, 166, 332, 913, 1826, 3652, 5857, 11714, 23428, 64427, 128854, 257708, 486131, 972262, 1944524, 5347441, 10694882, 21389764]

約数ペア:

[(1, 21389764), (2, 10694882), (4, 5347441), (11, 1944524), (22, 972262), (44, 486131), (83, 257708), (166, 128854), (332, 64427), (913, 23428), (1826, 11714), (3652, 5857)]