21140481

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4289}}^1$

素因数の和:4376

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8511999

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4289, 4929, 12867, 132959, 227317, 398877, 681951, 7046827, 21140481]

約数ペア:

[(1, 21140481), (3, 7046827), (31, 681951), (53, 398877), (93, 227317), (159, 132959), (1643, 12867), (4289, 4929)]