21084220

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3919}}^1$

素因数の和:4197

約数の個数: 24

約数和(自身を含む): 44452800

約数和(自身を除く): 23368580

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3919, 5380, 7838, 15676, 19595, 39190, 78380, 1054211, 2108422, 4216844, 5271055, 10542110, 21084220]

約数ペア:

[(1, 21084220), (2, 10542110), (4, 5271055), (5, 4216844), (10, 2108422), (20, 1054211), (269, 78380), (538, 39190), (1076, 19595), (1345, 15676), (2690, 7838), (3919, 5380)]