87981718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{28771}}^1$

素因数の和:28923

約数の個数: 16

約数和(自身を含む): 145010880

約数和(自身を除く): 57029162

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 28771, 57542, 316481, 632962, 3999169, 7998338, 43990859, 87981718]

約数ペア:

[(1, 87981718), (2, 43990859), (11, 7998338), (22, 3999169), (139, 632962), (278, 316481), (1529, 57542), (3058, 28771)]