21065109

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4253}}^1$

素因数の和:4396

約数の個数: 16

約数和(自身を含む): 30492672

約数和(自身を除く): 9427563

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4253, 4953, 12759, 55289, 165867, 540131, 1620393, 7021703, 21065109]

約数ペア:

[(1, 21065109), (3, 7021703), (13, 1620393), (39, 540131), (127, 165867), (381, 55289), (1651, 12759), (4253, 4953)]