28170220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108347}}^1$

素因数の和:108369

約数の個数: 24

約数和(自身を含む): 63708624

約数和(自身を除く): 35538404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108347, 216694, 433388, 541735, 1083470, 1408511, 2166940, 2817022, 5634044, 7042555, 14085110, 28170220]

約数ペア:

[(1, 28170220), (2, 14085110), (4, 7042555), (5, 5634044), (10, 2817022), (13, 2166940), (20, 1408511), (26, 1083470), (52, 541735), (65, 433388), (130, 216694), (260, 108347)]