20156591

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31643}}^1$

素因数の和:31670

約数の個数: 12

約数和(自身を含む): 25251912

約数和(自身を除く): 5095321

約数列:

[1, 7, 13, 49, 91, 637, 31643, 221501, 411359, 1550507, 2879513, 20156591]

約数ペア:

[(1, 20156591), (7, 2879513), (13, 1550507), (49, 411359), (91, 221501), (637, 31643)]