21856510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168127}}^1$

素因数の和:168147

約数の個数: 16

約数和(自身を含む): 42368256

約数和(自身を除く): 20511746

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168127, 336254, 840635, 1681270, 2185651, 4371302, 10928255, 21856510]

約数ペア:

[(1, 21856510), (2, 10928255), (5, 4371302), (10, 2185651), (13, 1681270), (26, 840635), (65, 336254), (130, 168127)]