19805734

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{10729}}^1$

素因数の和:10815

約数の個数: 16

約数和(自身を含む): 32447520

約数和(自身を除く): 12641786

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 10729, 21458, 139477, 278954, 761759, 1523518, 9902867, 19805734]

約数ペア:

[(1, 19805734), (2, 9902867), (13, 1523518), (26, 761759), (71, 278954), (142, 139477), (923, 21458), (1846, 10729)]