20778065

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1861}}^1$

素因数の和:1913

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11397295

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 145, 203, 319, 385, 1015, 1595, 1861, 2233, 9305, 11165, 13027, 20471, 53969, 65135, 102355, 143297, 269845, 377783, 593659, 716485, 1888915, 2968295, 4155613, 20778065]

約数ペア:

[(1, 20778065), (5, 4155613), (7, 2968295), (11, 1888915), (29, 716485), (35, 593659), (55, 377783), (77, 269845), (145, 143297), (203, 102355), (319, 65135), (385, 53969), (1015, 20471), (1595, 13027), (1861, 11165), (2233, 9305)]