21921590

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24631}}^1$

素因数の和:24727

約数の個数: 16

約数和(自身を含む): 39903840

約数和(自身を除く): 17982250

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24631, 49262, 123155, 246310, 2192159, 4384318, 10960795, 21921590]

約数ペア:

[(1, 21921590), (2, 10960795), (5, 4384318), (10, 2192159), (89, 246310), (178, 123155), (445, 49262), (890, 24631)]