81766672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393109}}^1$

素因数の和:393130

約数の個数: 20

約数和(自身を含む): 170609740

約数和(自身を除く): 88843068

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393109, 786218, 1572436, 3144872, 5110417, 6289744, 10220834, 20441668, 40883336, 81766672]

約数ペア:

[(1, 81766672), (2, 40883336), (4, 20441668), (8, 10220834), (13, 6289744), (16, 5110417), (26, 3144872), (52, 1572436), (104, 786218), (208, 393109)]