28774809

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:1010

約数の個数: 36

約数和(自身を含む): 49083840

約数和(自身を除く): 20309031

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 639, 919, 1491, 2757, 3479, 4473, 6433, 8271, 10437, 19299, 31311, 45031, 57897, 65249, 135093, 195747, 405279, 456743, 587241, 1370229, 3197201, 4110687, 9591603, 28774809]

約数ペア:

[(1, 28774809), (3, 9591603), (7, 4110687), (9, 3197201), (21, 1370229), (49, 587241), (63, 456743), (71, 405279), (147, 195747), (213, 135093), (441, 65249), (497, 57897), (639, 45031), (919, 31311), (1491, 19299), (2757, 10437), (3479, 8271), (4473, 6433)]