20491835

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1607

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 10836805

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1553, 1885, 2639, 7765, 10871, 13195, 20189, 45037, 54355, 100945, 141323, 225185, 315259, 585481, 706615, 1576295, 2927405, 4098367, 20491835]

約数ペア:

[(1, 20491835), (5, 4098367), (7, 2927405), (13, 1576295), (29, 706615), (35, 585481), (65, 315259), (91, 225185), (145, 141323), (203, 100945), (377, 54355), (455, 45037), (1015, 20189), (1553, 13195), (1885, 10871), (2639, 7765)]