21820113

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{18229}}^1$

素因数の和:18261

約数の個数: 24

約数和(自身を含む): 37918400

約数和(自身を除く): 16098287

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 18229, 54687, 127603, 164061, 346351, 382809, 1039053, 1148427, 2424457, 3117159, 7273371, 21820113]

約数ペア:

[(1, 21820113), (3, 7273371), (7, 3117159), (9, 2424457), (19, 1148427), (21, 1039053), (57, 382809), (63, 346351), (133, 164061), (171, 127603), (399, 54687), (1197, 18229)]