21147896

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{3121}}^1$

素因数の和:3156

約数の個数: 48

約数和(自身を含む): 49827120

約数和(自身を除く): 28679224

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 121, 154, 242, 308, 484, 616, 847, 968, 1694, 3121, 3388, 6242, 6776, 12484, 21847, 24968, 34331, 43694, 68662, 87388, 137324, 174776, 240317, 274648, 377641, 480634, 755282, 961268, 1510564, 1922536, 2643487, 3021128, 5286974, 10573948, 21147896]

約数ペア:

[(1, 21147896), (2, 10573948), (4, 5286974), (7, 3021128), (8, 2643487), (11, 1922536), (14, 1510564), (22, 961268), (28, 755282), (44, 480634), (56, 377641), (77, 274648), (88, 240317), (121, 174776), (154, 137324), (242, 87388), (308, 68662), (484, 43694), (616, 34331), (847, 24968), (968, 21847), (1694, 12484), (3121, 6776), (3388, 6242)]