20569199

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{509}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 4106641

約数列:

[1, 7, 23, 161, 251, 509, 1757, 3563, 5773, 11707, 40411, 81949, 127759, 894313, 2938457, 20569199]

約数ペア:

[(1, 20569199), (7, 2938457), (23, 894313), (161, 127759), (251, 81949), (509, 40411), (1757, 11707), (3563, 5773)]