20631321

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 32524800

約数和(自身を除く): 11893479

約数列:

[1, 3, 9, 19, 27, 57, 131, 171, 307, 393, 513, 921, 1179, 2489, 2763, 3537, 5833, 7467, 8289, 17499, 22401, 40217, 52497, 67203, 120651, 157491, 361953, 764123, 1085859, 2292369, 6877107, 20631321]

約数ペア:

[(1, 20631321), (3, 6877107), (9, 2292369), (19, 1085859), (27, 764123), (57, 361953), (131, 157491), (171, 120651), (307, 67203), (393, 52497), (513, 40217), (921, 22401), (1179, 17499), (2489, 8289), (2763, 7467), (3537, 5833)]