28181980

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{5087}}^1$

素因数の和:5373

約数の個数: 24

約数和(自身を含む): 59407488

約数和(自身を除く): 31225508

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 5087, 5540, 10174, 20348, 25435, 50870, 101740, 1409099, 2818198, 5636396, 7045495, 14090990, 28181980]

約数ペア:

[(1, 28181980), (2, 14090990), (4, 7045495), (5, 5636396), (10, 2818198), (20, 1409099), (277, 101740), (554, 50870), (1108, 25435), (1385, 20348), (2770, 10174), (5087, 5540)]