81364479

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{203921}}^1$

素因数の和:203950

約数の個数: 16

約数和(自身を含む): 130510080

約数和(自身を除く): 49145601

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 203921, 611763, 1427447, 3874499, 4282341, 11623497, 27121493, 81364479]

約数ペア:

[(1, 81364479), (3, 27121493), (7, 11623497), (19, 4282341), (21, 3874499), (57, 1427447), (133, 611763), (399, 203921)]