81539703

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4639}}^1$

素因数の和:4689

約数の個数: 40

約数和(自身を含む): 143728640

約数和(自身を除く): 62188937

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1953, 2511, 4639, 5859, 13917, 17577, 32473, 41751, 97419, 125253, 143809, 292257, 375759, 431427, 876771, 1006663, 1294281, 2630313, 3019989, 3882843, 9059967, 11648529, 27179901, 81539703]

約数ペア:

[(1, 81539703), (3, 27179901), (7, 11648529), (9, 9059967), (21, 3882843), (27, 3019989), (31, 2630313), (63, 1294281), (81, 1006663), (93, 876771), (189, 431427), (217, 375759), (279, 292257), (567, 143809), (651, 125253), (837, 97419), (1953, 41751), (2511, 32473), (4639, 17577), (5859, 13917)]