28109095

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3701}}^1$

素因数の和:3751

約数の個数: 24

約数和(自身を含む): 40514688

約数和(自身を除く): 12405593

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 3701, 7595, 18505, 25907, 114731, 129535, 181349, 573655, 803117, 906745, 4015585, 5621819, 28109095]

約数ペア:

[(1, 28109095), (5, 5621819), (7, 4015585), (31, 906745), (35, 803117), (49, 573655), (155, 181349), (217, 129535), (245, 114731), (1085, 25907), (1519, 18505), (3701, 7595)]