21056967

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1063}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 31868928

約数和(自身を除く): 10811961

約数列:

[1, 3, 9, 31, 71, 93, 213, 279, 639, 1063, 2201, 3189, 6603, 9567, 19809, 32953, 75473, 98859, 226419, 296577, 679257, 2339663, 7018989, 21056967]

約数ペア:

[(1, 21056967), (3, 7018989), (9, 2339663), (31, 679257), (71, 296577), (93, 226419), (213, 98859), (279, 75473), (639, 32953), (1063, 19809), (2201, 9567), (3189, 6603)]