19981440

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{3469}}^1$

素因数の和:3494

約数の個数: 96

約数和(自身を含む): 69018300

約数和(自身を除く): 49036860

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1920, 2880, 3469, 5760, 6938, 10407, 13876, 17345, 20814, 27752, 31221, 34690, 41628, 52035, 55504, 62442, 69380, 83256, 104070, 111008, 124884, 138760, 156105, 166512, 208140, 222016, 249768, 277520, 312210, 333024, 416280, 444032, 499536, 555040, 624420, 666048, 832560, 999072, 1110080, 1248840, 1332096, 1665120, 1998144, 2220160, 2497680, 3330240, 3996288, 4995360, 6660480, 9990720, 19981440]

約数ペア:

[(1, 19981440), (2, 9990720), (3, 6660480), (4, 4995360), (5, 3996288), (6, 3330240), (8, 2497680), (9, 2220160), (10, 1998144), (12, 1665120), (15, 1332096), (16, 1248840), (18, 1110080), (20, 999072), (24, 832560), (30, 666048), (32, 624420), (36, 555040), (40, 499536), (45, 444032), (48, 416280), (60, 333024), (64, 312210), (72, 277520), (80, 249768), (90, 222016), (96, 208140), (120, 166512), (128, 156105), (144, 138760), (160, 124884), (180, 111008), (192, 104070), (240, 83256), (288, 69380), (320, 62442), (360, 55504), (384, 52035), (480, 41628), (576, 34690), (640, 31221), (720, 27752), (960, 20814), (1152, 17345), (1440, 13876), (1920, 10407), (2880, 6938), (3469, 5760)]