81840129

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{49331}}^1$

素因数の和:49420

約数の個数: 16

約数和(自身を含む): 126289920

約数和(自身を除く): 44449791

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 49331, 147993, 345317, 1035951, 3897149, 11691447, 27280043, 81840129]

約数ペア:

[(1, 81840129), (3, 27280043), (7, 11691447), (21, 3897149), (79, 1035951), (237, 345317), (553, 147993), (1659, 49331)]