21298215

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{17107}}^1$

素因数の和:17198

約数の個数: 16

約数和(自身を含む): 34489728

約数和(自身を除く): 13191513

約数列:

[1, 3, 5, 15, 83, 249, 415, 1245, 17107, 51321, 85535, 256605, 1419881, 4259643, 7099405, 21298215]

約数ペア:

[(1, 21298215), (3, 7099405), (5, 4259643), (15, 1419881), (83, 256605), (249, 85535), (415, 51321), (1245, 17107)]