28247780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128399}}^1$

素因数の和:128419

約数の個数: 24

約数和(自身を含む): 64713600

約数和(自身を除く): 36465820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128399, 256798, 513596, 641995, 1283990, 1412389, 2567980, 2824778, 5649556, 7061945, 14123890, 28247780]

約数ペア:

[(1, 28247780), (2, 14123890), (4, 7061945), (5, 5649556), (10, 2824778), (11, 2567980), (20, 1412389), (22, 1283990), (44, 641995), (55, 513596), (110, 256798), (220, 128399)]