19679780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13859}}^1$

素因数の和:13939

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22232860

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13859, 27718, 55436, 69295, 138590, 277180, 983989, 1967978, 3935956, 4919945, 9839890, 19679780]

約数ペア:

[(1, 19679780), (2, 9839890), (4, 4919945), (5, 3935956), (10, 1967978), (20, 983989), (71, 277180), (142, 138590), (284, 69295), (355, 55436), (710, 27718), (1420, 13859)]