20207481

素因数分解:

$3^1\times 7^1\times {\mathrm{971}}^1\times {\mathrm{991}}^1$

素因数の和:1972

約数の個数: 16

約数和(自身を含む): 30855168

約数和(自身を除く): 10647687

約数列:

[1, 3, 7, 21, 971, 991, 2913, 2973, 6797, 6937, 20391, 20811, 962261, 2886783, 6735827, 20207481]

約数ペア:

[(1, 20207481), (3, 6735827), (7, 2886783), (21, 962261), (971, 20811), (991, 20391), (2913, 6937), (2973, 6797)]