21300695

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7621}}^1$

素因数の和:7682

約数の個数: 16

約数和(自身を含む): 28170912

約数和(自身を除く): 6870217

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7621, 38105, 99073, 327703, 495365, 1638515, 4260139, 21300695]

約数ペア:

[(1, 21300695), (5, 4260139), (13, 1638515), (43, 495365), (65, 327703), (215, 99073), (559, 38105), (2795, 7621)]