257894560

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{173}}^1$

素因数の和:228

約数の個数: 192

約数和(自身を含む): 770321664

約数和(自身を除く): 512427104

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 160, 173, 176, 220, 224, 242, 280, 308, 346, 352, 385, 440, 484, 560, 605, 616, 692, 770, 847, 865, 880, 968, 1120, 1210, 1211, 1232, 1331, 1384, 1540, 1694, 1730, 1760, 1903, 1936, 2420, 2422, 2464, 2662, 2768, 3080, 3388, 3460, 3806, 3872, 4235, 4840, 4844, 5324, 5536, 6055, 6160, 6655, 6776, 6920, 7612, 8470, 9317, 9515, 9680, 9688, 10648, 12110, 12320, 13310, 13321, 13552, 13840, 15224, 16940, 18634, 19030, 19360, 19376, 20933, 21296, 24220, 26620, 26642, 27104, 27680, 30448, 33880, 37268, 38060, 38752, 41866, 42592, 46585, 48440, 53240, 53284, 60896, 66605, 67760, 74536, 76120, 83732, 93170, 96880, 104665, 106480, 106568, 133210, 135520, 146531, 149072, 152240, 167464, 186340, 193760, 209330, 212960, 213136, 230263, 266420, 293062, 298144, 304480, 334928, 372680, 418660, 426272, 460526, 532840, 586124, 669856, 732655, 745360, 837320, 921052, 1065680, 1151315, 1172248, 1465310, 1490720, 1611841, 1674640, 1842104, 2131360, 2302630, 2344496, 2930620, 3223682, 3349280, 3684208, 4605260, 4688992, 5861240, 6447364, 7368416, 8059205, 9210520, 11722480, 12894728, 16118410, 18421040, 23444960, 25789456, 32236820, 36842080, 51578912, 64473640, 128947280, 257894560]

約数ペア:

[(1, 257894560), (2, 128947280), (4, 64473640), (5, 51578912), (7, 36842080), (8, 32236820), (10, 25789456), (11, 23444960), (14, 18421040), (16, 16118410), (20, 12894728), (22, 11722480), (28, 9210520), (32, 8059205), (35, 7368416), (40, 6447364), (44, 5861240), (55, 4688992), (56, 4605260), (70, 3684208), (77, 3349280), (80, 3223682), (88, 2930620), (110, 2344496), (112, 2302630), (121, 2131360), (140, 1842104), (154, 1674640), (160, 1611841), (173, 1490720), (176, 1465310), (220, 1172248), (224, 1151315), (242, 1065680), (280, 921052), (308, 837320), (346, 745360), (352, 732655), (385, 669856), (440, 586124), (484, 532840), (560, 460526), (605, 426272), (616, 418660), (692, 372680), (770, 334928), (847, 304480), (865, 298144), (880, 293062), (968, 266420), (1120, 230263), (1210, 213136), (1211, 212960), (1232, 209330), (1331, 193760), (1384, 186340), (1540, 167464), (1694, 152240), (1730, 149072), (1760, 146531), (1903, 135520), (1936, 133210), (2420, 106568), (2422, 106480), (2464, 104665), (2662, 96880), (2768, 93170), (3080, 83732), (3388, 76120), (3460, 74536), (3806, 67760), (3872, 66605), (4235, 60896), (4840, 53284), (4844, 53240), (5324, 48440), (5536, 46585), (6055, 42592), (6160, 41866), (6655, 38752), (6776, 38060), (6920, 37268), (7612, 33880), (8470, 30448), (9317, 27680), (9515, 27104), (9680, 26642), (9688, 26620), (10648, 24220), (12110, 21296), (12320, 20933), (13310, 19376), (13321, 19360), (13552, 19030), (13840, 18634), (15224, 16940)]