21998127

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4463}}^1$

素因数の和:4550

約数の個数: 16

約数和(自身を含む): 30855168

約数和(自身を除く): 8857041

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4463, 4929, 13389, 138353, 236539, 415059, 709617, 7332709, 21998127]

約数ペア:

[(1, 21998127), (3, 7332709), (31, 709617), (53, 415059), (93, 236539), (159, 138353), (1643, 13389), (4463, 4929)]