28180940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34367}}^1$

素因数の和:34417

約数の個数: 24

約数和(自身を含む): 60625152

約数和(自身を除く): 32444212

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 34367, 68734, 137468, 171835, 343670, 687340, 1409047, 2818094, 5636188, 7045235, 14090470, 28180940]

約数ペア:

[(1, 28180940), (2, 14090470), (4, 7045235), (5, 5636188), (10, 2818094), (20, 1409047), (41, 687340), (82, 343670), (164, 171835), (205, 137468), (410, 68734), (820, 34367)]