21679675

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1759}}^1$

素因数の和:1815

約数の個数: 24

約数和(自身を含む): 29462400

約数和(自身を除く): 7782725

約数列:

[1, 5, 17, 25, 29, 85, 145, 425, 493, 725, 1759, 2465, 8795, 12325, 29903, 43975, 51011, 149515, 255055, 747575, 867187, 1275275, 4335935, 21679675]

約数ペア:

[(1, 21679675), (5, 4335935), (17, 1275275), (25, 867187), (29, 747575), (85, 255055), (145, 149515), (425, 51011), (493, 43975), (725, 29903), (1759, 12325), (2465, 8795)]