19981688

素因数分解:

$2^3\times {\mathrm{263}}^1\times {\mathrm{9497}}^1$

素因数の和:9766

約数の個数: 16

約数和(自身を含む): 37612080

約数和(自身を除く): 17630392

約数列:

[1, 2, 4, 8, 263, 526, 1052, 2104, 9497, 18994, 37988, 75976, 2497711, 4995422, 9990844, 19981688]

約数ペア:

[(1, 19981688), (2, 9990844), (4, 4995422), (8, 2497711), (263, 75976), (526, 37988), (1052, 18994), (2104, 9497)]