80939979

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 125801280

約数和(自身を除く): 44861301

約数列:

[1, 3, 9, 27, 37, 81, 111, 113, 239, 333, 339, 717, 999, 1017, 2151, 2997, 3051, 4181, 6453, 8843, 9153, 12543, 19359, 26529, 27007, 37629, 79587, 81021, 112887, 238761, 243063, 338661, 716283, 729189, 999259, 2187567, 2997777, 8993331, 26979993, 80939979]

約数ペア:

[(1, 80939979), (3, 26979993), (9, 8993331), (27, 2997777), (37, 2187567), (81, 999259), (111, 729189), (113, 716283), (239, 338661), (333, 243063), (339, 238761), (717, 112887), (999, 81021), (1017, 79587), (2151, 37629), (2997, 27007), (3051, 26529), (4181, 19359), (6453, 12543), (8843, 9153)]