21539395

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{607}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 26615808

約数和(自身を除く): 5076413

約数列:

[1, 5, 47, 151, 235, 607, 755, 3035, 7097, 28529, 35485, 91657, 142645, 458285, 4307879, 21539395]

約数ペア:

[(1, 21539395), (5, 4307879), (47, 458285), (151, 142645), (235, 91657), (607, 35485), (755, 28529), (3035, 7097)]