18489645

素因数分解:

$3^2\times 5^1\times {\mathrm{641}}^2$

素因数の和:1293

約数の個数: 18

約数和(自身を含む): 32098794

約数和(自身を除く): 13609149

約数列:

[1, 3, 5, 9, 15, 45, 641, 1923, 3205, 5769, 9615, 28845, 410881, 1232643, 2054405, 3697929, 6163215, 18489645]

約数ペア:

[(1, 18489645), (3, 6163215), (5, 3697929), (9, 2054405), (15, 1232643), (45, 410881), (641, 28845), (1923, 9615), (3205, 5769)]