20516590

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47713}}^1$

素因数の和:47763

約数の個数: 16

約数和(自身を含む): 37789488

約数和(自身を除く): 17272898

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 47713, 95426, 238565, 477130, 2051659, 4103318, 10258295, 20516590]

約数ペア:

[(1, 20516590), (2, 10258295), (5, 4103318), (10, 2051659), (43, 477130), (86, 238565), (215, 95426), (430, 47713)]