9782451

素因数分解:

$3^9\times 7^1\times {\mathrm{71}}^1$

素因数の和:105

約数の個数: 40

約数和(自身を含む): 17005824

約数和(自身を除く): 7223373

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 243, 497, 567, 639, 729, 1491, 1701, 1917, 2187, 4473, 5103, 5751, 6561, 13419, 15309, 17253, 19683, 40257, 45927, 51759, 120771, 137781, 155277, 362313, 465831, 1086939, 1397493, 3260817, 9782451]

約数ペア:

[(1, 9782451), (3, 3260817), (7, 1397493), (9, 1086939), (21, 465831), (27, 362313), (63, 155277), (71, 137781), (81, 120771), (189, 51759), (213, 45927), (243, 40257), (497, 19683), (567, 17253), (639, 15309), (729, 13419), (1491, 6561), (1701, 5751), (1917, 5103), (2187, 4473)]