19880710

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28001}}^1$

素因数の和:28079

約数の個数: 16

約数和(自身を含む): 36290592

約数和(自身を除く): 16409882

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28001, 56002, 140005, 280010, 1988071, 3976142, 9940355, 19880710]

約数ペア:

[(1, 19880710), (2, 9940355), (5, 3976142), (10, 1988071), (71, 280010), (142, 140005), (355, 56002), (710, 28001)]