20731886

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7517}}^1$

素因数の和:7723

約数の個数: 16

約数和(自身を含む): 35725536

約数和(自身を除く): 14993650

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7517, 15034, 52619, 105238, 1480849, 2961698, 10365943, 20731886]

約数ペア:

[(1, 20731886), (2, 10365943), (7, 2961698), (14, 1480849), (197, 105238), (394, 52619), (1379, 15034), (2758, 7517)]