21660089

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 25561536

約数和(自身を除く): 3901447

約数列:

[1, 11, 23, 43, 121, 181, 253, 473, 989, 1991, 2783, 4163, 5203, 7783, 10879, 21901, 45793, 85613, 119669, 179009, 503723, 941743, 1969099, 21660089]

約数ペア:

[(1, 21660089), (11, 1969099), (23, 941743), (43, 503723), (121, 179009), (181, 119669), (253, 85613), (473, 45793), (989, 21901), (1991, 10879), (2783, 7783), (4163, 5203)]