20774545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{971}}^1$

素因数の和:1376

約数の個数: 16

約数和(自身を含む): 27293760

約数和(自身を除く): 6519215

約数列:

[1, 5, 11, 55, 389, 971, 1945, 4279, 4855, 10681, 21395, 53405, 377719, 1888595, 4154909, 20774545]

約数ペア:

[(1, 20774545), (5, 4154909), (11, 1888595), (55, 377719), (389, 53405), (971, 21395), (1945, 10681), (4279, 4855)]