278641560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{997}}^1$

素因数の和:1165

約数の個数: 128

約数和(自身を含む): 892451520

約数和(自身を除く): 613809960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 137, 170, 204, 255, 274, 340, 408, 411, 510, 548, 680, 685, 822, 997, 1020, 1096, 1370, 1644, 1994, 2040, 2055, 2329, 2740, 2991, 3288, 3988, 4110, 4658, 4985, 5480, 5982, 6987, 7976, 8220, 9316, 9970, 11645, 11964, 13974, 14955, 16440, 16949, 18632, 19940, 23290, 23928, 27948, 29910, 33898, 34935, 39880, 46580, 50847, 55896, 59820, 67796, 69870, 84745, 93160, 101694, 119640, 135592, 136589, 139740, 169490, 203388, 254235, 273178, 279480, 338980, 406776, 409767, 508470, 546356, 677960, 682945, 819534, 1016940, 1092712, 1365890, 1639068, 2033880, 2048835, 2322013, 2731780, 3278136, 4097670, 4644026, 5463560, 6966039, 8195340, 9288052, 11610065, 13932078, 16390680, 18576104, 23220130, 27864156, 34830195, 46440260, 55728312, 69660390, 92880520, 139320780, 278641560]

約数ペア:

[(1, 278641560), (2, 139320780), (3, 92880520), (4, 69660390), (5, 55728312), (6, 46440260), (8, 34830195), (10, 27864156), (12, 23220130), (15, 18576104), (17, 16390680), (20, 13932078), (24, 11610065), (30, 9288052), (34, 8195340), (40, 6966039), (51, 5463560), (60, 4644026), (68, 4097670), (85, 3278136), (102, 2731780), (120, 2322013), (136, 2048835), (137, 2033880), (170, 1639068), (204, 1365890), (255, 1092712), (274, 1016940), (340, 819534), (408, 682945), (411, 677960), (510, 546356), (548, 508470), (680, 409767), (685, 406776), (822, 338980), (997, 279480), (1020, 273178), (1096, 254235), (1370, 203388), (1644, 169490), (1994, 139740), (2040, 136589), (2055, 135592), (2329, 119640), (2740, 101694), (2991, 93160), (3288, 84745), (3988, 69870), (4110, 67796), (4658, 59820), (4985, 55896), (5480, 50847), (5982, 46580), (6987, 39880), (7976, 34935), (8220, 33898), (9316, 29910), (9970, 27948), (11645, 23928), (11964, 23290), (13974, 19940), (14955, 18632), (16440, 16949)]