21006921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{10163}}^1$

素因数の和:10232

約数の個数: 16

約数和(自身を含む): 30735936

約数和(自身を除く): 9729015

約数列:

[1, 3, 13, 39, 53, 159, 689, 2067, 10163, 30489, 132119, 396357, 538639, 1615917, 7002307, 21006921]

約数ペア:

[(1, 21006921), (3, 7002307), (13, 1615917), (39, 538639), (53, 396357), (159, 132119), (689, 30489), (2067, 10163)]