19919874

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{255383}}^1$

素因数の和:255401

約数の個数: 16

約数和(自身を含む): 42904512

約数和(自身を除く): 22984638

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 255383, 510766, 766149, 1532298, 3319979, 6639958, 9959937, 19919874]

約数ペア:

[(1, 19919874), (2, 9959937), (3, 6639958), (6, 3319979), (13, 1532298), (26, 766149), (39, 510766), (78, 255383)]