18938361

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 29094912

約数和(自身を除く): 10156551

約数列:

[1, 3, 13, 23, 39, 43, 69, 129, 299, 491, 559, 897, 989, 1473, 1677, 2967, 6383, 11293, 12857, 19149, 21113, 33879, 38571, 63339, 146809, 274469, 440427, 485599, 823407, 1456797, 6312787, 18938361]

約数ペア:

[(1, 18938361), (3, 6312787), (13, 1456797), (23, 823407), (39, 485599), (43, 440427), (69, 274469), (129, 146809), (299, 63339), (491, 38571), (559, 33879), (897, 21113), (989, 19149), (1473, 12857), (1677, 11293), (2967, 6383)]