19996581

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{1777}}^1$

素因数の和:1833

約数の個数: 24

約数和(自身を含む): 30268672

約数和(自身を除く): 10272091

約数列:

[1, 3, 11, 31, 33, 93, 121, 341, 363, 1023, 1777, 3751, 5331, 11253, 19547, 55087, 58641, 165261, 215017, 605957, 645051, 1817871, 6665527, 19996581]

約数ペア:

[(1, 19996581), (3, 6665527), (11, 1817871), (31, 645051), (33, 605957), (93, 215017), (121, 165261), (341, 58641), (363, 55087), (1023, 19547), (1777, 11253), (3751, 5331)]