18720735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4933}}^1$

素因数の和:4975

約数の個数: 32

約数和(自身を含む): 34103808

約数和(自身を除く): 15383073

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 4933, 14799, 24665, 54263, 73995, 113459, 162789, 271315, 340377, 567295, 813945, 1248049, 1701885, 3744147, 6240245, 18720735]

約数ペア:

[(1, 18720735), (3, 6240245), (5, 3744147), (11, 1701885), (15, 1248049), (23, 813945), (33, 567295), (55, 340377), (69, 271315), (115, 162789), (165, 113459), (253, 73995), (345, 54263), (759, 24665), (1265, 14799), (3795, 4933)]