28939880

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5281}}^1$

素因数の和:5429

約数の個数: 32

約数和(自身を含む): 65602440

約数和(自身を除く): 36662560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5281, 5480, 10562, 21124, 26405, 42248, 52810, 105620, 211240, 723497, 1446994, 2893988, 3617485, 5787976, 7234970, 14469940, 28939880]

約数ペア:

[(1, 28939880), (2, 14469940), (4, 7234970), (5, 5787976), (8, 3617485), (10, 2893988), (20, 1446994), (40, 723497), (137, 211240), (274, 105620), (548, 52810), (685, 42248), (1096, 26405), (1370, 21124), (2740, 10562), (5281, 5480)]