21480908

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1759}}^1$

素因数の和:1877

約数の個数: 24

約数和(自身を含む): 39029760

約数和(自身を除く): 17548852

約数列:

[1, 2, 4, 43, 71, 86, 142, 172, 284, 1759, 3053, 3518, 6106, 7036, 12212, 75637, 124889, 151274, 249778, 302548, 499556, 5370227, 10740454, 21480908]

約数ペア:

[(1, 21480908), (2, 10740454), (4, 5370227), (43, 499556), (71, 302548), (86, 249778), (142, 151274), (172, 124889), (284, 75637), (1759, 12212), (3053, 7036), (3518, 6106)]