21004676

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1451}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 46835712

約数和(自身を除く): 25831036

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 47, 77, 94, 154, 188, 308, 329, 517, 658, 1034, 1316, 1451, 2068, 2902, 3619, 5804, 7238, 10157, 14476, 15961, 20314, 31922, 40628, 63844, 68197, 111727, 136394, 223454, 272788, 446908, 477379, 750167, 954758, 1500334, 1909516, 3000668, 5251169, 10502338, 21004676]

約数ペア:

[(1, 21004676), (2, 10502338), (4, 5251169), (7, 3000668), (11, 1909516), (14, 1500334), (22, 954758), (28, 750167), (44, 477379), (47, 446908), (77, 272788), (94, 223454), (154, 136394), (188, 111727), (308, 68197), (329, 63844), (517, 40628), (658, 31922), (1034, 20314), (1316, 15961), (1451, 14476), (2068, 10157), (2902, 7238), (3619, 5804)]