28651259

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 37793280

約数和(自身を除く): 9142021

約数列:

[1, 7, 13, 19, 73, 91, 133, 227, 247, 511, 949, 1387, 1589, 1729, 2951, 4313, 6643, 9709, 16571, 18031, 20657, 30191, 56069, 115997, 126217, 215423, 314849, 392483, 1507961, 2203943, 4093037, 28651259]

約数ペア:

[(1, 28651259), (7, 4093037), (13, 2203943), (19, 1507961), (73, 392483), (91, 314849), (133, 215423), (227, 126217), (247, 115997), (511, 56069), (949, 30191), (1387, 20657), (1589, 18031), (1729, 16571), (2951, 9709), (4313, 6643)]