678746439

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{50581}}^1$

素因数の和:50668

約数の個数: 32

約数和(自身を含む): 1165409280

約数和(自身を除く): 486662841

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 4473, 13419, 50581, 151743, 354067, 455229, 1062201, 1365687, 3186603, 3591251, 9559809, 10773753, 25138757, 32321259, 75416271, 96963777, 226248813, 678746439]

約数ペア:

[(1, 678746439), (3, 226248813), (7, 96963777), (9, 75416271), (21, 32321259), (27, 25138757), (63, 10773753), (71, 9559809), (189, 3591251), (213, 3186603), (497, 1365687), (639, 1062201), (1491, 455229), (1917, 354067), (4473, 151743), (13419, 50581)]