19811817

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2539}}^1$

素因数の和:2582

約数の個数: 24

約数和(自身を含む): 31191200

約数和(自身を除く): 11379383

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2539, 2601, 7617, 7803, 22851, 43163, 68553, 129489, 388467, 733771, 1165401, 2201313, 6603939, 19811817]

約数ペア:

[(1, 19811817), (3, 6603939), (9, 2201313), (17, 1165401), (27, 733771), (51, 388467), (153, 129489), (289, 68553), (459, 43163), (867, 22851), (2539, 7803), (2601, 7617)]