19904001

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{26861}}^1$

素因数の和:26896

約数の個数: 16

約数和(自身を含む): 30085440

約数和(自身を除く): 10181439

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 26861, 80583, 349193, 510359, 1047579, 1531077, 6634667, 19904001]

約数ペア:

[(1, 19904001), (3, 6634667), (13, 1531077), (19, 1047579), (39, 510359), (57, 349193), (247, 80583), (741, 26861)]