287394723

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 556174080

約数和(自身を除く): 268779357

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 59, 63, 71, 77, 81, 99, 121, 177, 189, 213, 231, 297, 363, 413, 497, 531, 567, 639, 649, 693, 781, 847, 891, 1089, 1239, 1491, 1593, 1917, 1947, 2079, 2343, 2541, 3267, 3717, 4189, 4473, 4543, 4779, 5467, 5751, 5841, 6237, 7029, 7139, 7623, 8591, 9801, 11151, 12567, 13419, 13629, 16401, 17523, 21087, 21417, 22869, 25773, 29323, 33453, 37701, 40257, 40887, 46079, 49203, 49973, 52569, 60137, 63261, 64251, 68607, 77319, 87969, 113103, 122661, 138237, 147609, 149919, 180411, 192753, 231957, 263907, 322553, 339309, 367983, 414711, 442827, 449757, 506869, 541233, 578259, 695871, 791721, 967659, 1244133, 1349271, 1520607, 1623699, 2375163, 2902977, 3548083, 3732399, 4047813, 4561821, 4871097, 8708931, 10644249, 13685463, 26126793, 31932747, 41056389, 95798241, 287394723]

約数ペア:

[(1, 287394723), (3, 95798241), (7, 41056389), (9, 31932747), (11, 26126793), (21, 13685463), (27, 10644249), (33, 8708931), (59, 4871097), (63, 4561821), (71, 4047813), (77, 3732399), (81, 3548083), (99, 2902977), (121, 2375163), (177, 1623699), (189, 1520607), (213, 1349271), (231, 1244133), (297, 967659), (363, 791721), (413, 695871), (497, 578259), (531, 541233), (567, 506869), (639, 449757), (649, 442827), (693, 414711), (781, 367983), (847, 339309), (891, 322553), (1089, 263907), (1239, 231957), (1491, 192753), (1593, 180411), (1917, 149919), (1947, 147609), (2079, 138237), (2343, 122661), (2541, 113103), (3267, 87969), (3717, 77319), (4189, 68607), (4473, 64251), (4543, 63261), (4779, 60137), (5467, 52569), (5751, 49973), (5841, 49203), (6237, 46079), (7029, 40887), (7139, 40257), (7623, 37701), (8591, 33453), (9801, 29323), (11151, 25773), (12567, 22869), (13419, 21417), (13629, 21087), (16401, 17523)]