21778785

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:132

約数の個数: 96

約数和(自身を含む): 47174400

約数和(自身を除く): 25395615

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 49, 51, 63, 83, 85, 105, 119, 147, 153, 245, 249, 255, 315, 343, 357, 415, 441, 581, 595, 735, 747, 765, 833, 1029, 1071, 1245, 1411, 1715, 1743, 1785, 2205, 2499, 2905, 3087, 3735, 4067, 4165, 4233, 5145, 5229, 5355, 5831, 7055, 7497, 8715, 9877, 12201, 12495, 12699, 15435, 17493, 20335, 21165, 26145, 28469, 29155, 29631, 36603, 37485, 49385, 52479, 61005, 63495, 69139, 85407, 87465, 88893, 142345, 148155, 183015, 207417, 256221, 262395, 345695, 427035, 444465, 483973, 622251, 1037085, 1281105, 1451919, 2419865, 3111255, 4355757, 7259595, 21778785]

約数ペア:

[(1, 21778785), (3, 7259595), (5, 4355757), (7, 3111255), (9, 2419865), (15, 1451919), (17, 1281105), (21, 1037085), (35, 622251), (45, 483973), (49, 444465), (51, 427035), (63, 345695), (83, 262395), (85, 256221), (105, 207417), (119, 183015), (147, 148155), (153, 142345), (245, 88893), (249, 87465), (255, 85407), (315, 69139), (343, 63495), (357, 61005), (415, 52479), (441, 49385), (581, 37485), (595, 36603), (735, 29631), (747, 29155), (765, 28469), (833, 26145), (1029, 21165), (1071, 20335), (1245, 17493), (1411, 15435), (1715, 12699), (1743, 12495), (1785, 12201), (2205, 9877), (2499, 8715), (2905, 7497), (3087, 7055), (3735, 5831), (4067, 5355), (4165, 5229), (4233, 5145)]