28909280

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{643}}^1$

素因数の和:939

約数の個数: 48

約数和(自身を含む): 68647824

約数和(自身を除く): 39738544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 562, 643, 1124, 1286, 1405, 2248, 2572, 2810, 3215, 4496, 5144, 5620, 6430, 8992, 10288, 11240, 12860, 20576, 22480, 25720, 44960, 51440, 102880, 180683, 361366, 722732, 903415, 1445464, 1806830, 2890928, 3613660, 5781856, 7227320, 14454640, 28909280]

約数ペア:

[(1, 28909280), (2, 14454640), (4, 7227320), (5, 5781856), (8, 3613660), (10, 2890928), (16, 1806830), (20, 1445464), (32, 903415), (40, 722732), (80, 361366), (160, 180683), (281, 102880), (562, 51440), (643, 44960), (1124, 25720), (1286, 22480), (1405, 20576), (2248, 12860), (2572, 11240), (2810, 10288), (3215, 8992), (4496, 6430), (5144, 5620)]