28489880

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{5437}}^1$

素因数の和:5579

約数の個数: 32

約数和(自身を含む): 64603440

約数和(自身を除く): 36113560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 5437, 10874, 21748, 27185, 43496, 54370, 108740, 217480, 712247, 1424494, 2848988, 3561235, 5697976, 7122470, 14244940, 28489880]

約数ペア:

[(1, 28489880), (2, 14244940), (4, 7122470), (5, 5697976), (8, 3561235), (10, 2848988), (20, 1424494), (40, 712247), (131, 217480), (262, 108740), (524, 54370), (655, 43496), (1048, 27185), (1310, 21748), (2620, 10874), (5240, 5437)]