637804940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{243437}}^1$

素因数の和:243577

約数の個数: 24

約数和(自身を含む): 1349620272

約数和(自身を除く): 711815332

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 243437, 486874, 973748, 1217185, 2434370, 4868740, 31890247, 63780494, 127560988, 159451235, 318902470, 637804940]

約数ペア:

[(1, 637804940), (2, 318902470), (4, 159451235), (5, 127560988), (10, 63780494), (20, 31890247), (131, 4868740), (262, 2434370), (524, 1217185), (655, 973748), (1310, 486874), (2620, 243437)]