21806707

素因数分解:

${\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 24185952

約数和(自身を除く): 2379245

約数列:

[1, 13, 61, 107, 257, 793, 1391, 3341, 6527, 15677, 27499, 84851, 203801, 357487, 1677439, 21806707]

約数ペア:

[(1, 21806707), (13, 1677439), (61, 357487), (107, 203801), (257, 84851), (793, 27499), (1391, 15677), (3341, 6527)]