20257965

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 47416320

約数和(自身を除く): 27158355

約数列:

[1, 3, 5, 7, 9, 13, 15, 17, 21, 27, 35, 39, 45, 51, 63, 65, 85, 91, 97, 105, 117, 119, 135, 153, 189, 195, 221, 255, 273, 291, 315, 351, 357, 455, 459, 485, 585, 595, 663, 679, 765, 819, 873, 945, 1071, 1105, 1261, 1365, 1455, 1547, 1649, 1755, 1785, 1989, 2037, 2295, 2457, 2619, 3213, 3315, 3395, 3783, 4095, 4365, 4641, 4947, 5355, 5967, 6111, 6305, 7735, 8245, 8827, 9945, 10185, 11349, 11543, 12285, 13095, 13923, 14841, 16065, 18333, 18915, 21437, 23205, 24735, 26481, 29835, 30555, 34047, 34629, 41769, 44135, 44523, 56745, 57715, 64311, 69615, 74205, 79443, 91665, 103887, 107185, 132405, 150059, 170235, 173145, 192933, 208845, 222615, 238329, 311661, 321555, 397215, 450177, 519435, 578799, 750295, 964665, 1191645, 1350531, 1558305, 2250885, 2893995, 4051593, 6752655, 20257965]

約数ペア:

[(1, 20257965), (3, 6752655), (5, 4051593), (7, 2893995), (9, 2250885), (13, 1558305), (15, 1350531), (17, 1191645), (21, 964665), (27, 750295), (35, 578799), (39, 519435), (45, 450177), (51, 397215), (63, 321555), (65, 311661), (85, 238329), (91, 222615), (97, 208845), (105, 192933), (117, 173145), (119, 170235), (135, 150059), (153, 132405), (189, 107185), (195, 103887), (221, 91665), (255, 79443), (273, 74205), (291, 69615), (315, 64311), (351, 57715), (357, 56745), (455, 44523), (459, 44135), (485, 41769), (585, 34629), (595, 34047), (663, 30555), (679, 29835), (765, 26481), (819, 24735), (873, 23205), (945, 21437), (1071, 18915), (1105, 18333), (1261, 16065), (1365, 14841), (1455, 13923), (1547, 13095), (1649, 12285), (1755, 11543), (1785, 11349), (1989, 10185), (2037, 9945), (2295, 8827), (2457, 8245), (2619, 7735), (3213, 6305), (3315, 6111), (3395, 5967), (3783, 5355), (4095, 4947), (4365, 4641)]