21561117

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{569}}^1\times {\mathrm{743}}^1$

素因数の和:1332

約数の個数: 16

約数和(自身を含む): 30533760

約数和(自身を除く): 8972643

約数列:

[1, 3, 17, 51, 569, 743, 1707, 2229, 9673, 12631, 29019, 37893, 422767, 1268301, 7187039, 21561117]

約数ペア:

[(1, 21561117), (3, 7187039), (17, 1268301), (51, 422767), (569, 37893), (743, 29019), (1707, 12631), (2229, 9673)]