257423980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1170109}}^1$

素因数の和:1170129

約数の個数: 24

約数和(自身を含む): 589735440

約数和(自身を除く): 332311460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1170109, 2340218, 4680436, 5850545, 11701090, 12871199, 23402180, 25742398, 51484796, 64355995, 128711990, 257423980]

約数ペア:

[(1, 257423980), (2, 128711990), (4, 64355995), (5, 51484796), (10, 25742398), (11, 23402180), (20, 12871199), (22, 11701090), (44, 5850545), (55, 4680436), (110, 2340218), (220, 1170109)]