28308005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 11228635

約数列:

[1, 5, 11, 19, 55, 95, 103, 209, 263, 515, 1045, 1133, 1315, 1957, 2893, 4997, 5665, 9785, 14465, 21527, 24985, 27089, 54967, 107635, 135445, 274835, 297979, 514691, 1489895, 2573455, 5661601, 28308005]

約数ペア:

[(1, 28308005), (5, 5661601), (11, 2573455), (19, 1489895), (55, 514691), (95, 297979), (103, 274835), (209, 135445), (263, 107635), (515, 54967), (1045, 27089), (1133, 24985), (1315, 21527), (1957, 14465), (2893, 9785), (4997, 5665)]