19209281

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{251}}^1$

素因数の和:329

約数の個数: 24

約数和(自身を含む): 24583104

約数和(自身を除く): 5373823

約数列:

[1, 7, 13, 29, 91, 203, 251, 377, 841, 1757, 2639, 3263, 5887, 7279, 10933, 22841, 50953, 76531, 94627, 211091, 662389, 1477637, 2744183, 19209281]

約数ペア:

[(1, 19209281), (7, 2744183), (13, 1477637), (29, 662389), (91, 211091), (203, 94627), (251, 76531), (377, 50953), (841, 22841), (1757, 10933), (2639, 7279), (3263, 5887)]