20718789

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2617}}^1$

素因数の和:2669

約数の個数: 32

約数和(自身を含む): 35185920

約数和(自身を除く): 14467131

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 203, 273, 377, 609, 1131, 2617, 2639, 7851, 7917, 18319, 34021, 54957, 75893, 102063, 227679, 238147, 531251, 714441, 986609, 1593753, 2959827, 6906263, 20718789]

約数ペア:

[(1, 20718789), (3, 6906263), (7, 2959827), (13, 1593753), (21, 986609), (29, 714441), (39, 531251), (87, 238147), (91, 227679), (203, 102063), (273, 75893), (377, 54957), (609, 34021), (1131, 18319), (2617, 7917), (2639, 7851)]