21000308

素因数分解:

$2^2\times 7^1\times {\mathrm{787}}^1\times {\mathrm{953}}^1$

素因数の和:1751

約数の個数: 24

約数和(自身を含む): 42098112

約数和(自身を除く): 21097804

約数列:

[1, 2, 4, 7, 14, 28, 787, 953, 1574, 1906, 3148, 3812, 5509, 6671, 11018, 13342, 22036, 26684, 750011, 1500022, 3000044, 5250077, 10500154, 21000308]

約数ペア:

[(1, 21000308), (2, 10500154), (4, 5250077), (7, 3000044), (14, 1500022), (28, 750011), (787, 26684), (953, 22036), (1574, 13342), (1906, 11018), (3148, 6671), (3812, 5509)]