19515897

素因数分解:

$3^4\times {\mathrm{479}}^1\times {\mathrm{503}}^1$

素因数の和:994

約数の個数: 20

約数和(自身を含む): 29272320

約数和(自身を除く): 9756423

約数列:

[1, 3, 9, 27, 81, 479, 503, 1437, 1509, 4311, 4527, 12933, 13581, 38799, 40743, 240937, 722811, 2168433, 6505299, 19515897]

約数ペア:

[(1, 19515897), (3, 6505299), (9, 2168433), (27, 722811), (81, 240937), (479, 40743), (503, 38799), (1437, 13581), (1509, 12933), (4311, 4527)]