20971315

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{947}}^1$

素因数の和:1098

約数の個数: 16

約数和(自身を含む): 26028288

約数和(自身を除く): 5056973

約数列:

[1, 5, 43, 103, 215, 515, 947, 4429, 4735, 22145, 40721, 97541, 203605, 487705, 4194263, 20971315]

約数ペア:

[(1, 20971315), (5, 4194263), (43, 487705), (103, 203605), (215, 97541), (515, 40721), (947, 22145), (4429, 4735)]