21426805

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{823}}^1$

素因数の和:996

約数の個数: 16

約数和(自身を含む): 26578944

約数和(自身を除く): 5152139

約数列:

[1, 5, 41, 127, 205, 635, 823, 4115, 5207, 26035, 33743, 104521, 168715, 522605, 4285361, 21426805]

約数ペア:

[(1, 21426805), (5, 4285361), (41, 522605), (127, 168715), (205, 104521), (635, 33743), (823, 26035), (4115, 5207)]