20924813

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 26544672

約数和(自身を除く): 5619859

約数列:

[1, 7, 13, 49, 91, 107, 307, 637, 749, 1391, 2149, 3991, 5243, 9737, 15043, 27937, 32849, 68159, 195559, 229943, 427037, 1609601, 2989259, 20924813]

約数ペア:

[(1, 20924813), (7, 2989259), (13, 1609601), (49, 427037), (91, 229943), (107, 195559), (307, 68159), (637, 32849), (749, 27937), (1391, 15043), (2149, 9737), (3991, 5243)]