20128581

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:112

約数の個数: 80

約数和(自身を含む): 36590400

約数和(自身を除く): 16461819

約数列:

[1, 3, 9, 11, 19, 27, 29, 33, 41, 57, 81, 87, 99, 123, 171, 209, 261, 297, 319, 369, 451, 513, 551, 627, 779, 783, 891, 957, 1107, 1189, 1353, 1539, 1653, 1881, 2337, 2349, 2871, 3321, 3567, 4059, 4959, 5643, 6061, 7011, 8569, 8613, 10701, 12177, 13079, 14877, 16929, 18183, 21033, 22591, 25707, 25839, 32103, 36531, 39237, 44631, 54549, 63099, 67773, 77121, 96309, 117711, 163647, 203319, 231363, 248501, 353133, 490941, 609957, 694089, 745503, 1059399, 1829871, 2236509, 6709527, 20128581]

約数ペア:

[(1, 20128581), (3, 6709527), (9, 2236509), (11, 1829871), (19, 1059399), (27, 745503), (29, 694089), (33, 609957), (41, 490941), (57, 353133), (81, 248501), (87, 231363), (99, 203319), (123, 163647), (171, 117711), (209, 96309), (261, 77121), (297, 67773), (319, 63099), (369, 54549), (451, 44631), (513, 39237), (551, 36531), (627, 32103), (779, 25839), (783, 25707), (891, 22591), (957, 21033), (1107, 18183), (1189, 16929), (1353, 14877), (1539, 13079), (1653, 12177), (1881, 10701), (2337, 8613), (2349, 8569), (2871, 7011), (3321, 6061), (3567, 5643), (4059, 4959)]