257357776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1237297}}^1$

素因数の和:1237318

約数の個数: 20

約数和(自身を含む): 536987332

約数和(自身を除く): 279629556

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1237297, 2474594, 4949188, 9898376, 16084861, 19796752, 32169722, 64339444, 128678888, 257357776]

約数ペア:

[(1, 257357776), (2, 128678888), (4, 64339444), (8, 32169722), (13, 19796752), (16, 16084861), (26, 9898376), (52, 4949188), (104, 2474594), (208, 1237297)]