19747816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{643}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 40572000

約数和(自身を除く): 20824184

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 349, 643, 698, 1286, 1396, 2572, 2792, 3839, 5144, 7073, 7678, 14146, 15356, 28292, 30712, 56584, 224407, 448814, 897628, 1795256, 2468477, 4936954, 9873908, 19747816]

約数ペア:

[(1, 19747816), (2, 9873908), (4, 4936954), (8, 2468477), (11, 1795256), (22, 897628), (44, 448814), (88, 224407), (349, 56584), (643, 30712), (698, 28292), (1286, 15356), (1396, 14146), (2572, 7678), (2792, 7073), (3839, 5144)]