21974937

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 29816832

約数和(自身を除く): 7841895

約数列:

[1, 3, 127, 137, 381, 411, 421, 1263, 17399, 52197, 53467, 57677, 160401, 173031, 7324979, 21974937]

約数ペア:

[(1, 21974937), (3, 7324979), (127, 173031), (137, 160401), (381, 57677), (411, 53467), (421, 52197), (1263, 17399)]