21907145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{9109}}^1$

素因数の和:9164

約数の個数: 16

約数和(自身を含む): 29079120

約数和(自身を除く): 7171975

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 9109, 45545, 118417, 337033, 592085, 1685165, 4381429, 21907145]

約数ペア:

[(1, 21907145), (5, 4381429), (13, 1685165), (37, 592085), (65, 337033), (185, 118417), (481, 45545), (2405, 9109)]