20168904

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{443}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 57968640

約数和(自身を除く): 37799736

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 271, 443, 542, 813, 886, 1084, 1329, 1626, 1772, 1897, 2168, 2658, 3101, 3252, 3544, 3794, 5316, 5691, 6202, 6504, 7588, 9303, 10632, 11382, 12404, 15176, 18606, 22764, 24808, 37212, 45528, 74424, 120053, 240106, 360159, 480212, 720318, 840371, 960424, 1440636, 1680742, 2521113, 2881272, 3361484, 5042226, 6722968, 10084452, 20168904]

約数ペア:

[(1, 20168904), (2, 10084452), (3, 6722968), (4, 5042226), (6, 3361484), (7, 2881272), (8, 2521113), (12, 1680742), (14, 1440636), (21, 960424), (24, 840371), (28, 720318), (42, 480212), (56, 360159), (84, 240106), (168, 120053), (271, 74424), (443, 45528), (542, 37212), (813, 24808), (886, 22764), (1084, 18606), (1329, 15176), (1626, 12404), (1772, 11382), (1897, 10632), (2168, 9303), (2658, 7588), (3101, 6504), (3252, 6202), (3544, 5691), (3794, 5316)]