78128000

素因数分解:

$2^7\times 5^3\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 205264800

約数和(自身を除く): 127136800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 125, 128, 152, 160, 190, 200, 250, 257, 304, 320, 380, 400, 475, 500, 514, 608, 640, 760, 800, 950, 1000, 1028, 1216, 1285, 1520, 1600, 1900, 2000, 2056, 2375, 2432, 2570, 3040, 3200, 3800, 4000, 4112, 4750, 4883, 5140, 6080, 6425, 7600, 8000, 8224, 9500, 9766, 10280, 12160, 12850, 15200, 16000, 16448, 19000, 19532, 20560, 24415, 25700, 30400, 32125, 32896, 38000, 39064, 41120, 48830, 51400, 60800, 64250, 76000, 78128, 82240, 97660, 102800, 122075, 128500, 152000, 156256, 164480, 195320, 205600, 244150, 257000, 304000, 312512, 390640, 411200, 488300, 514000, 610375, 625024, 781280, 822400, 976600, 1028000, 1220750, 1562560, 1953200, 2056000, 2441500, 3125120, 3906400, 4112000, 4883000, 7812800, 9766000, 15625600, 19532000, 39064000, 78128000]

約数ペア:

[(1, 78128000), (2, 39064000), (4, 19532000), (5, 15625600), (8, 9766000), (10, 7812800), (16, 4883000), (19, 4112000), (20, 3906400), (25, 3125120), (32, 2441500), (38, 2056000), (40, 1953200), (50, 1562560), (64, 1220750), (76, 1028000), (80, 976600), (95, 822400), (100, 781280), (125, 625024), (128, 610375), (152, 514000), (160, 488300), (190, 411200), (200, 390640), (250, 312512), (257, 304000), (304, 257000), (320, 244150), (380, 205600), (400, 195320), (475, 164480), (500, 156256), (514, 152000), (608, 128500), (640, 122075), (760, 102800), (800, 97660), (950, 82240), (1000, 78128), (1028, 76000), (1216, 64250), (1285, 60800), (1520, 51400), (1600, 48830), (1900, 41120), (2000, 39064), (2056, 38000), (2375, 32896), (2432, 32125), (2570, 30400), (3040, 25700), (3200, 24415), (3800, 20560), (4000, 19532), (4112, 19000), (4750, 16448), (4883, 16000), (5140, 15200), (6080, 12850), (6425, 12160), (7600, 10280), (8000, 9766), (8224, 9500)]