20512762011

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{106649}}^1$

素因数の和:106776

約数の個数: 48

約数和(自身を含む): 35138188800

約数和(自身を除く): 14625426789

約数列:

[1, 3, 7, 9, 21, 43, 63, 71, 129, 213, 301, 387, 497, 639, 903, 1491, 2709, 3053, 4473, 9159, 21371, 27477, 64113, 106649, 192339, 319947, 746543, 959841, 2239629, 4585907, 6718887, 7572079, 13757721, 22716237, 32101349, 41273163, 53004553, 68148711, 96304047, 159013659, 288912141, 325599397, 477040977, 976798191, 2279195779, 2930394573, 6837587337, 20512762011]

約数ペア:

[(1, 20512762011), (3, 6837587337), (7, 2930394573), (9, 2279195779), (21, 976798191), (43, 477040977), (63, 325599397), (71, 288912141), (129, 159013659), (213, 96304047), (301, 68148711), (387, 53004553), (497, 41273163), (639, 32101349), (903, 22716237), (1491, 13757721), (2709, 7572079), (3053, 6718887), (4473, 4585907), (9159, 2239629), (21371, 959841), (27477, 746543), (64113, 319947), (106649, 192339)]