21124270

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{20509}}^1$

素因数の和:20619

約数の個数: 16

約数和(自身を含む): 38394720

約数和(自身を除く): 17270450

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 20509, 41018, 102545, 205090, 2112427, 4224854, 10562135, 21124270]

約数ペア:

[(1, 21124270), (2, 10562135), (5, 4224854), (10, 2112427), (103, 205090), (206, 102545), (515, 41018), (1030, 20509)]