21918676

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3319}}^1$

素因数の和:3463

約数の個数: 24

約数和(自身を含む): 41646080

約数和(自身を除く): 19727404

約数列:

[1, 2, 4, 13, 26, 52, 127, 254, 508, 1651, 3302, 3319, 6604, 6638, 13276, 43147, 86294, 172588, 421513, 843026, 1686052, 5479669, 10959338, 21918676]

約数ペア:

[(1, 21918676), (2, 10959338), (4, 5479669), (13, 1686052), (26, 843026), (52, 421513), (127, 172588), (254, 86294), (508, 43147), (1651, 13276), (3302, 6638), (3319, 6604)]