20121513

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1583}}^1$

素因数の和:1828

約数の個数: 16

約数和(自身を含む): 28385280

約数和(自身を除く): 8263767

約数列:

[1, 3, 19, 57, 223, 669, 1583, 4237, 4749, 12711, 30077, 90231, 353009, 1059027, 6707171, 20121513]

約数ペア:

[(1, 20121513), (3, 6707171), (19, 1059027), (57, 353009), (223, 90231), (669, 30077), (1583, 12711), (4237, 4749)]