19972878

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{144731}}^1$

素因数の和:144759

約数の個数: 16

約数和(自身を含む): 41682816

約数和(自身を除く): 21709938

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 144731, 289462, 434193, 868386, 3328813, 6657626, 9986439, 19972878]

約数ペア:

[(1, 19972878), (2, 9986439), (3, 6657626), (6, 3328813), (23, 868386), (46, 434193), (69, 289462), (138, 144731)]