19904907

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{2347}}^1$

素因数の和:2618

約数の個数: 16

約数和(自身を含む): 29077632

約数和(自身を除く): 9172725

約数列:

[1, 3, 11, 33, 257, 771, 2347, 2827, 7041, 8481, 25817, 77451, 603179, 1809537, 6634969, 19904907]

約数ペア:

[(1, 19904907), (3, 6634969), (11, 1809537), (33, 603179), (257, 77451), (771, 25817), (2347, 8481), (2827, 7041)]