21994908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{509}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 55577760

約数和(自身を除く): 33582852

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 277, 509, 554, 831, 1018, 1108, 1527, 1662, 2036, 3054, 3324, 3601, 6108, 6617, 7202, 10803, 13234, 14404, 19851, 21606, 26468, 39702, 43212, 79404, 140993, 281986, 422979, 563972, 845958, 1691916, 1832909, 3665818, 5498727, 7331636, 10997454, 21994908]

約数ペア:

[(1, 21994908), (2, 10997454), (3, 7331636), (4, 5498727), (6, 3665818), (12, 1832909), (13, 1691916), (26, 845958), (39, 563972), (52, 422979), (78, 281986), (156, 140993), (277, 79404), (509, 43212), (554, 39702), (831, 26468), (1018, 21606), (1108, 19851), (1527, 14404), (1662, 13234), (2036, 10803), (3054, 7202), (3324, 6617), (3601, 6108)]