21693987

素因数分解:

$3^4\times 7^1\times {\mathrm{38261}}^1$

素因数の和:38280

約数の個数: 20

約数和(自身を含む): 37037616

約数和(自身を除く): 15343629

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38261, 114783, 267827, 344349, 803481, 1033047, 2410443, 3099141, 7231329, 21693987]

約数ペア:

[(1, 21693987), (3, 7231329), (7, 3099141), (9, 2410443), (21, 1033047), (27, 803481), (63, 344349), (81, 267827), (189, 114783), (567, 38261)]