19689001490

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{9994417}}^1$

素因数の和:9994621

約数の個数: 16

約数和(自身を含む): 35620105752

約数和(自身を除く): 15931104262

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 9994417, 19988834, 49972085, 99944170, 1968900149, 3937800298, 9844500745, 19689001490]

約数ペア:

[(1, 19689001490), (2, 9844500745), (5, 3937800298), (10, 1968900149), (197, 99944170), (394, 49972085), (985, 19988834), (1970, 9994417)]