19916923

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:414

約数の個数: 16

約数和(自身を含む): 22117536

約数和(自身を除く): 2200613

約数列:

[1, 13, 53, 137, 211, 689, 1781, 2743, 7261, 11183, 28907, 94393, 145379, 375791, 1532071, 19916923]

約数ペア:

[(1, 19916923), (13, 1532071), (53, 375791), (137, 145379), (211, 94393), (689, 28907), (1781, 11183), (2743, 7261)]