20998509584

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7765721}}^1$

素因数の和:7765755

約数の個数: 30

約数和(自身を含む): 44054940906

約数和(自身を除く): 23056431322

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7765721, 15531442, 31062884, 62125768, 100954373, 124251536, 201908746, 403817492, 807634984, 1312406849, 1615269968, 2624813698, 5249627396, 10499254792, 20998509584]

約数ペア:

[(1, 20998509584), (2, 10499254792), (4, 5249627396), (8, 2624813698), (13, 1615269968), (16, 1312406849), (26, 807634984), (52, 403817492), (104, 201908746), (169, 124251536), (208, 100954373), (338, 62125768), (676, 31062884), (1352, 15531442), (2704, 7765721)]