21254105

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{607}}^1$

素因数の和:808

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 5011495

約数列:

[1, 5, 47, 149, 235, 607, 745, 3035, 7003, 28529, 35015, 90443, 142645, 452215, 4250821, 21254105]

約数ペア:

[(1, 21254105), (5, 4250821), (47, 452215), (149, 142645), (235, 90443), (607, 35015), (745, 28529), (3035, 7003)]