19984723

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 23595264

約数和(自身を除く): 3610541

約数列:

[1, 11, 23, 43, 121, 167, 253, 473, 989, 1837, 2783, 3841, 5203, 7181, 10879, 20207, 42251, 78991, 119669, 165163, 464761, 868901, 1816793, 19984723]

約数ペア:

[(1, 19984723), (11, 1816793), (23, 868901), (43, 464761), (121, 165163), (167, 119669), (253, 78991), (473, 42251), (989, 20207), (1837, 10879), (2783, 7181), (3841, 5203)]