21264919

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:514

約数の個数: 16

約数和(自身を含む): 23716000

約数和(自身を除く): 2451081

約数列:

[1, 13, 43, 109, 349, 559, 1417, 4537, 4687, 15007, 38041, 60931, 195091, 494533, 1635763, 21264919]

約数ペア:

[(1, 21264919), (13, 1635763), (43, 494533), (109, 195091), (349, 60931), (559, 38041), (1417, 15007), (4537, 4687)]