20971097

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{401}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 24904704

約数和(自身を除く): 3933607

約数列:

[1, 7, 31, 217, 241, 401, 1687, 2807, 7471, 12431, 52297, 87017, 96641, 676487, 2995871, 20971097]

約数ペア:

[(1, 20971097), (7, 2995871), (31, 676487), (217, 96641), (241, 87017), (401, 52297), (1687, 12431), (2807, 7471)]