20497113

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{863}}^1$

素因数の和:918

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17242407

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 63, 87, 91, 117, 203, 261, 273, 377, 609, 819, 863, 1131, 1827, 2589, 2639, 3393, 6041, 7767, 7917, 11219, 18123, 23751, 25027, 33657, 54369, 75081, 78533, 100971, 175189, 225243, 235599, 325351, 525567, 706797, 976053, 1576701, 2277457, 2928159, 6832371, 20497113]

約数ペア:

[(1, 20497113), (3, 6832371), (7, 2928159), (9, 2277457), (13, 1576701), (21, 976053), (29, 706797), (39, 525567), (63, 325351), (87, 235599), (91, 225243), (117, 175189), (203, 100971), (261, 78533), (273, 75081), (377, 54369), (609, 33657), (819, 25027), (863, 23751), (1131, 18123), (1827, 11219), (2589, 7917), (2639, 7767), (3393, 6041)]