21977073

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{379}}^2$

素因数の和:781

約数の個数: 18

約数和(自身を含む): 33700914

約数和(自身を除く): 11723841

約数列:

[1, 3, 9, 17, 51, 153, 379, 1137, 3411, 6443, 19329, 57987, 143641, 430923, 1292769, 2441897, 7325691, 21977073]

約数ペア:

[(1, 21977073), (3, 7325691), (9, 2441897), (17, 1292769), (51, 430923), (153, 143641), (379, 57987), (1137, 19329), (3411, 6443)]