649168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3121}}^1$

素因数の和:3142

約数の個数: 20

約数和(自身を含む): 1354948

約数和(自身を除く): 705780

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3121, 6242, 12484, 24968, 40573, 49936, 81146, 162292, 324584, 649168]

約数ペア:

[(1, 649168), (2, 324584), (4, 162292), (8, 81146), (13, 49936), (16, 40573), (26, 24968), (52, 12484), (104, 6242), (208, 3121)]