81389121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 121499136

約数和(自身を除く): 40110015

約数列:

[1, 3, 11, 33, 67, 131, 201, 281, 393, 737, 843, 1441, 2211, 3091, 4323, 8777, 9273, 18827, 26331, 36811, 56481, 96547, 110433, 207097, 289641, 404921, 621291, 1214763, 2466337, 7399011, 27129707, 81389121]

約数ペア:

[(1, 81389121), (3, 27129707), (11, 7399011), (33, 2466337), (67, 1214763), (131, 621291), (201, 404921), (281, 289641), (393, 207097), (737, 110433), (843, 96547), (1441, 56481), (2211, 36811), (3091, 26331), (4323, 18827), (8777, 9273)]