18990309

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{28643}}^1$

素因数の和:28676

約数の個数: 16

約数和(自身を含む): 28873152

約数和(自身を除く): 9882843

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 28643, 85929, 372359, 486931, 1117077, 1460793, 6330103, 18990309]

約数ペア:

[(1, 18990309), (3, 6330103), (13, 1460793), (17, 1117077), (39, 486931), (51, 372359), (221, 85929), (663, 28643)]