21487745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5879}}^1$

素因数の和:5944

約数の個数: 16

約数和(自身を含む): 27941760

約数和(自身を除く): 6454015

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5879, 29395, 99943, 252797, 499715, 1263985, 4297549, 21487745]

約数ペア:

[(1, 21487745), (5, 4297549), (17, 1263985), (43, 499715), (85, 252797), (215, 99943), (731, 29395), (3655, 5879)]