20028960

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{1987}}^1$

素因数の和:2015

約数の個数: 144

約数和(自身を含む): 78152256

約数和(自身を除く): 58123296

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 1987, 2016, 2520, 3360, 3974, 5040, 5961, 7948, 9935, 10080, 11922, 13909, 15896, 17883, 19870, 23844, 27818, 29805, 31792, 35766, 39740, 41727, 47688, 55636, 59610, 63584, 69545, 71532, 79480, 83454, 89415, 95376, 111272, 119220, 125181, 139090, 143064, 158960, 166908, 178830, 190752, 208635, 222544, 238440, 250362, 278180, 286128, 317920, 333816, 357660, 417270, 445088, 476880, 500724, 556360, 572256, 625905, 667632, 715320, 834540, 953760, 1001448, 1112720, 1251810, 1335264, 1430640, 1669080, 2002896, 2225440, 2503620, 2861280, 3338160, 4005792, 5007240, 6676320, 10014480, 20028960]

約数ペア:

[(1, 20028960), (2, 10014480), (3, 6676320), (4, 5007240), (5, 4005792), (6, 3338160), (7, 2861280), (8, 2503620), (9, 2225440), (10, 2002896), (12, 1669080), (14, 1430640), (15, 1335264), (16, 1251810), (18, 1112720), (20, 1001448), (21, 953760), (24, 834540), (28, 715320), (30, 667632), (32, 625905), (35, 572256), (36, 556360), (40, 500724), (42, 476880), (45, 445088), (48, 417270), (56, 357660), (60, 333816), (63, 317920), (70, 286128), (72, 278180), (80, 250362), (84, 238440), (90, 222544), (96, 208635), (105, 190752), (112, 178830), (120, 166908), (126, 158960), (140, 143064), (144, 139090), (160, 125181), (168, 119220), (180, 111272), (210, 95376), (224, 89415), (240, 83454), (252, 79480), (280, 71532), (288, 69545), (315, 63584), (336, 59610), (360, 55636), (420, 47688), (480, 41727), (504, 39740), (560, 35766), (630, 31792), (672, 29805), (720, 27818), (840, 23844), (1008, 19870), (1120, 17883), (1260, 15896), (1440, 13909), (1680, 11922), (1987, 10080), (2016, 9935), (2520, 7948), (3360, 5961), (3974, 5040)]