21709136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79813}}^1$

素因数の和:79838

約数の個数: 20

約数和(自身を含む): 44536212

約数和(自身を除く): 22827076

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79813, 159626, 319252, 638504, 1277008, 1356821, 2713642, 5427284, 10854568, 21709136]

約数ペア:

[(1, 21709136), (2, 10854568), (4, 5427284), (8, 2713642), (16, 1356821), (17, 1277008), (34, 638504), (68, 319252), (136, 159626), (272, 79813)]