21304893

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{997}}^1$

素因数の和:1436

約数の個数: 16

約数和(自身を含む): 30179520

約数和(自身を除く): 8874627

約数列:

[1, 3, 17, 51, 419, 997, 1257, 2991, 7123, 16949, 21369, 50847, 417743, 1253229, 7101631, 21304893]

約数ペア:

[(1, 21304893), (3, 7101631), (17, 1253229), (51, 417743), (419, 50847), (997, 21369), (1257, 16949), (2991, 7123)]