21375361

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{929}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 25891200

約数和(自身を除く): 4515839

約数列:

[1, 7, 19, 133, 173, 929, 1211, 3287, 6503, 17651, 23009, 123557, 160717, 1125019, 3053623, 21375361]

約数ペア:

[(1, 21375361), (7, 3053623), (19, 1125019), (133, 160717), (173, 123557), (929, 23009), (1211, 17651), (3287, 6503)]