21005012

素因数分解:

$2^2\times 7^1\times {\mathrm{750179}}^1$

素因数の和:750190

約数の個数: 12

約数和(自身を含む): 42010080

約数和(自身を除く): 21005068

約数列:

[1, 2, 4, 7, 14, 28, 750179, 1500358, 3000716, 5251253, 10502506, 21005012]

約数ペア:

[(1, 21005012), (2, 10502506), (4, 5251253), (7, 3000716), (14, 1500358), (28, 750179)]