81780156

素因数分解:

$2^2\times 3^2\times {\mathrm{131}}^1\times {\mathrm{17341}}^1$

素因数の和:17482

約数の個数: 36

約数和(自身を含む): 208312104

約数和(自身を除く): 126531948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 131, 262, 393, 524, 786, 1179, 1572, 2358, 4716, 17341, 34682, 52023, 69364, 104046, 156069, 208092, 312138, 624276, 2271671, 4543342, 6815013, 9086684, 13630026, 20445039, 27260052, 40890078, 81780156]

約数ペア:

[(1, 81780156), (2, 40890078), (3, 27260052), (4, 20445039), (6, 13630026), (9, 9086684), (12, 6815013), (18, 4543342), (36, 2271671), (131, 624276), (262, 312138), (393, 208092), (524, 156069), (786, 104046), (1179, 69364), (1572, 52023), (2358, 34682), (4716, 17341)]