21260590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163543}}^1$

素因数の和:163563

約数の個数: 16

約数和(自身を含む): 41213088

約数和(自身を除く): 19952498

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163543, 327086, 817715, 1635430, 2126059, 4252118, 10630295, 21260590]

約数ペア:

[(1, 21260590), (2, 10630295), (5, 4252118), (10, 2126059), (13, 1635430), (26, 817715), (65, 327086), (130, 163543)]