21938931

素因数分解:

$3^4\times 7^1\times {\mathrm{38693}}^1$

素因数の和:38712

約数の個数: 20

約数和(自身を含む): 37455792

約数和(自身を除く): 15516861

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 38693, 116079, 270851, 348237, 812553, 1044711, 2437659, 3134133, 7312977, 21938931]

約数ペア:

[(1, 21938931), (3, 7312977), (7, 3134133), (9, 2437659), (21, 1044711), (27, 812553), (63, 348237), (81, 270851), (189, 116079), (567, 38693)]