81631587

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 116582400

約数和(自身を除く): 34950813

約数列:

[1, 3, 31, 43, 93, 129, 137, 149, 411, 447, 1333, 3999, 4247, 4619, 5891, 6407, 12741, 13857, 17673, 19221, 20413, 61239, 182621, 198617, 547863, 595851, 632803, 877759, 1898409, 2633277, 27210529, 81631587]

約数ペア:

[(1, 81631587), (3, 27210529), (31, 2633277), (43, 1898409), (93, 877759), (129, 632803), (137, 595851), (149, 547863), (411, 198617), (447, 182621), (1333, 61239), (3999, 20413), (4247, 19221), (4619, 17673), (5891, 13857), (6407, 12741)]