280807725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^3\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 96

約数和(自身を含む): 533715840

約数和(自身を除く): 252908115

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 97, 121, 145, 165, 275, 291, 319, 363, 435, 485, 605, 725, 825, 957, 1067, 1331, 1455, 1595, 1815, 2175, 2425, 2813, 3025, 3201, 3509, 3993, 4785, 5335, 6655, 7275, 7975, 8439, 9075, 10527, 11737, 14065, 16005, 17545, 19965, 23925, 26675, 30943, 33275, 35211, 38599, 42195, 52635, 58685, 70325, 80025, 87725, 92829, 99825, 115797, 129107, 154715, 176055, 192995, 210975, 263175, 293425, 340373, 387321, 464145, 578985, 645535, 773575, 880275, 964975, 1021119, 1701865, 1936605, 2320725, 2894925, 3227675, 3744103, 5105595, 8509325, 9683025, 11232309, 18720515, 25527975, 56161545, 93602575, 280807725]

約数ペア:

[(1, 280807725), (3, 93602575), (5, 56161545), (11, 25527975), (15, 18720515), (25, 11232309), (29, 9683025), (33, 8509325), (55, 5105595), (75, 3744103), (87, 3227675), (97, 2894925), (121, 2320725), (145, 1936605), (165, 1701865), (275, 1021119), (291, 964975), (319, 880275), (363, 773575), (435, 645535), (485, 578985), (605, 464145), (725, 387321), (825, 340373), (957, 293425), (1067, 263175), (1331, 210975), (1455, 192995), (1595, 176055), (1815, 154715), (2175, 129107), (2425, 115797), (2813, 99825), (3025, 92829), (3201, 87725), (3509, 80025), (3993, 70325), (4785, 58685), (5335, 52635), (6655, 42195), (7275, 38599), (7975, 35211), (8439, 33275), (9075, 30943), (10527, 26675), (11737, 23925), (14065, 19965), (16005, 17545)]