21566888

素因数分解:

$2^3\times 7^1\times {\mathrm{353}}^1\times {\mathrm{1091}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 46388160

約数和(自身を除く): 24821272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 353, 706, 1091, 1412, 2182, 2471, 2824, 4364, 4942, 7637, 8728, 9884, 15274, 19768, 30548, 61096, 385123, 770246, 1540492, 2695861, 3080984, 5391722, 10783444, 21566888]

約数ペア:

[(1, 21566888), (2, 10783444), (4, 5391722), (7, 3080984), (8, 2695861), (14, 1540492), (28, 770246), (56, 385123), (353, 61096), (706, 30548), (1091, 19768), (1412, 15274), (2182, 9884), (2471, 8728), (2824, 7637), (4364, 4942)]