21152004

素因数分解:

$2^2\times 3^1\times {\mathrm{509}}^1\times {\mathrm{3463}}^1$

素因数の和:3979

約数の個数: 24

約数和(自身を含む): 49465920

約数和(自身を除く): 28313916

約数列:

[1, 2, 3, 4, 6, 12, 509, 1018, 1527, 2036, 3054, 3463, 6108, 6926, 10389, 13852, 20778, 41556, 1762667, 3525334, 5288001, 7050668, 10576002, 21152004]

約数ペア:

[(1, 21152004), (2, 10576002), (3, 7050668), (4, 5288001), (6, 3525334), (12, 1762667), (509, 41556), (1018, 20778), (1527, 13852), (2036, 10389), (3054, 6926), (3463, 6108)]