15980559

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 25360896

約数和(自身を除く): 9380337

約数列:

[1, 3, 7, 21, 37, 111, 131, 157, 259, 393, 471, 777, 917, 1099, 2751, 3297, 4847, 5809, 14541, 17427, 20567, 33929, 40663, 61701, 101787, 121989, 143969, 431907, 760979, 2282937, 5326853, 15980559]

約数ペア:

[(1, 15980559), (3, 5326853), (7, 2282937), (21, 760979), (37, 431907), (111, 143969), (131, 121989), (157, 101787), (259, 61701), (393, 40663), (471, 33929), (777, 20567), (917, 17427), (1099, 14541), (2751, 5809), (3297, 4847)]