20981543

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1$

素因数の和:814

約数の個数: 16

約数和(自身を含む): 24109056

約数和(自身を除く): 3127513

約数列:

[1, 11, 23, 127, 253, 653, 1397, 2921, 7183, 15019, 32131, 82931, 165209, 912241, 1907413, 20981543]

約数ペア:

[(1, 20981543), (11, 1907413), (23, 912241), (127, 165209), (253, 82931), (653, 32131), (1397, 15019), (2921, 7183)]