21701992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208673}}^1$

素因数の和:208692

約数の個数: 16

約数和(自身を含む): 43821540

約数和(自身を除く): 22119548

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208673, 417346, 834692, 1669384, 2712749, 5425498, 10850996, 21701992]

約数ペア:

[(1, 21701992), (2, 10850996), (4, 5425498), (8, 2712749), (13, 1669384), (26, 834692), (52, 417346), (104, 208673)]