28381269

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{857}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 46126080

約数和(自身を除く): 17744811

約数列:

[1, 3, 7, 19, 21, 57, 83, 133, 249, 399, 581, 857, 1577, 1743, 2571, 4731, 5999, 11039, 16283, 17997, 33117, 48849, 71131, 113981, 213393, 341943, 497917, 1351489, 1493751, 4054467, 9460423, 28381269]

約数ペア:

[(1, 28381269), (3, 9460423), (7, 4054467), (19, 1493751), (21, 1351489), (57, 497917), (83, 341943), (133, 213393), (249, 113981), (399, 71131), (581, 48849), (857, 33117), (1577, 17997), (1743, 16283), (2571, 11039), (4731, 5999)]