19943559

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{523}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 30517760

約数和(自身を除く): 10574201

約数列:

[1, 3, 9, 19, 57, 171, 223, 523, 669, 1569, 2007, 4237, 4707, 9937, 12711, 29811, 38133, 89433, 116629, 349887, 1049661, 2215951, 6647853, 19943559]

約数ペア:

[(1, 19943559), (3, 6647853), (9, 2215951), (19, 1049661), (57, 349887), (171, 116629), (223, 89433), (523, 38133), (669, 29811), (1569, 12711), (2007, 9937), (4237, 4707)]