18440721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{569}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 28839720

約数和(自身を除く): 10398999

約数列:

[1, 3, 9, 13, 39, 117, 277, 569, 831, 1707, 2493, 3601, 5121, 7397, 10803, 22191, 32409, 66573, 157613, 472839, 1418517, 2048969, 6146907, 18440721]

約数ペア:

[(1, 18440721), (3, 6146907), (9, 2048969), (13, 1418517), (39, 472839), (117, 157613), (277, 66573), (569, 32409), (831, 22191), (1707, 10803), (2493, 7397), (3601, 5121)]