19987598

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{1117}}^1$

素因数の和:1531

約数の個数: 16

約数和(自身を含む): 31393440

約数和(自身を除く): 11405842

約数列:

[1, 2, 23, 46, 389, 778, 1117, 2234, 8947, 17894, 25691, 51382, 434513, 869026, 9993799, 19987598]

約数ペア:

[(1, 19987598), (2, 9993799), (23, 869026), (46, 434513), (389, 51382), (778, 25691), (1117, 17894), (2234, 8947)]