20421190

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20219}}^1$

素因数の和:20327

約数の個数: 16

約数和(自身を含む): 37123920

約数和(自身を除く): 16702730

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20219, 40438, 101095, 202190, 2042119, 4084238, 10210595, 20421190]

約数ペア:

[(1, 20421190), (2, 10210595), (5, 4084238), (10, 2042119), (101, 202190), (202, 101095), (505, 40438), (1010, 20219)]