81656960

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1657}}^1$

素因数の和:1694

約数の個数: 128

約数和(自身を含む): 243527040

約数和(自身を除く): 161870080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 128, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 440, 448, 560, 616, 640, 704, 770, 880, 896, 1120, 1232, 1408, 1540, 1657, 1760, 2240, 2464, 3080, 3314, 3520, 4480, 4928, 6160, 6628, 7040, 8285, 9856, 11599, 12320, 13256, 16570, 18227, 23198, 24640, 26512, 33140, 36454, 46396, 49280, 53024, 57995, 66280, 72908, 91135, 92792, 106048, 115990, 127589, 132560, 145816, 182270, 185584, 212096, 231980, 255178, 265120, 291632, 364540, 371168, 463960, 510356, 530240, 583264, 637945, 729080, 742336, 927920, 1020712, 1060480, 1166528, 1275890, 1458160, 1484672, 1855840, 2041424, 2333056, 2551780, 2916320, 3711680, 4082848, 5103560, 5832640, 7423360, 8165696, 10207120, 11665280, 16331392, 20414240, 40828480, 81656960]

約数ペア:

[(1, 81656960), (2, 40828480), (4, 20414240), (5, 16331392), (7, 11665280), (8, 10207120), (10, 8165696), (11, 7423360), (14, 5832640), (16, 5103560), (20, 4082848), (22, 3711680), (28, 2916320), (32, 2551780), (35, 2333056), (40, 2041424), (44, 1855840), (55, 1484672), (56, 1458160), (64, 1275890), (70, 1166528), (77, 1060480), (80, 1020712), (88, 927920), (110, 742336), (112, 729080), (128, 637945), (140, 583264), (154, 530240), (160, 510356), (176, 463960), (220, 371168), (224, 364540), (280, 291632), (308, 265120), (320, 255178), (352, 231980), (385, 212096), (440, 185584), (448, 182270), (560, 145816), (616, 132560), (640, 127589), (704, 115990), (770, 106048), (880, 92792), (896, 91135), (1120, 72908), (1232, 66280), (1408, 57995), (1540, 53024), (1657, 49280), (1760, 46396), (2240, 36454), (2464, 33140), (3080, 26512), (3314, 24640), (3520, 23198), (4480, 18227), (4928, 16570), (6160, 13256), (6628, 12320), (7040, 11599), (8285, 9856)]