128940903

素因数分解:

$3^5\times 7^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:73

約数の個数: 120

約数和(自身を含む): 256930128

約数和(自身を除く): 127989225

約数列:

[1, 3, 7, 9, 13, 17, 21, 27, 39, 49, 51, 63, 81, 91, 117, 119, 147, 153, 189, 221, 243, 273, 343, 351, 357, 441, 459, 567, 637, 663, 819, 833, 1029, 1053, 1071, 1323, 1377, 1547, 1701, 1911, 1989, 2401, 2457, 2499, 3087, 3159, 3213, 3969, 4131, 4459, 4641, 5733, 5831, 5967, 7203, 7371, 7497, 9261, 9639, 10829, 11907, 13377, 13923, 17199, 17493, 17901, 21609, 22113, 22491, 27783, 28917, 31213, 32487, 40131, 40817, 41769, 51597, 52479, 53703, 64827, 67473, 75803, 83349, 93639, 97461, 120393, 122451, 125307, 154791, 157437, 194481, 202419, 227409, 280917, 292383, 361179, 367353, 375921, 472311, 530621, 583443, 682227, 842751, 877149, 1083537, 1102059, 1416933, 1591863, 2046681, 2528253, 2631447, 3306177, 4775589, 6140043, 7584759, 9918531, 14326767, 18420129, 42980301, 128940903]

約数ペア:

[(1, 128940903), (3, 42980301), (7, 18420129), (9, 14326767), (13, 9918531), (17, 7584759), (21, 6140043), (27, 4775589), (39, 3306177), (49, 2631447), (51, 2528253), (63, 2046681), (81, 1591863), (91, 1416933), (117, 1102059), (119, 1083537), (147, 877149), (153, 842751), (189, 682227), (221, 583443), (243, 530621), (273, 472311), (343, 375921), (351, 367353), (357, 361179), (441, 292383), (459, 280917), (567, 227409), (637, 202419), (663, 194481), (819, 157437), (833, 154791), (1029, 125307), (1053, 122451), (1071, 120393), (1323, 97461), (1377, 93639), (1547, 83349), (1701, 75803), (1911, 67473), (1989, 64827), (2401, 53703), (2457, 52479), (2499, 51597), (3087, 41769), (3159, 40817), (3213, 40131), (3969, 32487), (4131, 31213), (4459, 28917), (4641, 27783), (5733, 22491), (5831, 22113), (5967, 21609), (7203, 17901), (7371, 17493), (7497, 17199), (9261, 13923), (9639, 13377), (10829, 11907)]