1981440

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{43}}^1$

素因数の和:74

約数の個数: 132

約数和(自身を含む): 7025304

約数和(自身を除く): 5043864

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 64, 72, 80, 86, 90, 96, 120, 128, 129, 144, 160, 172, 180, 192, 215, 240, 256, 258, 288, 320, 344, 360, 384, 387, 430, 480, 512, 516, 576, 640, 645, 688, 720, 768, 774, 860, 960, 1024, 1032, 1152, 1280, 1290, 1376, 1440, 1536, 1548, 1720, 1920, 1935, 2064, 2304, 2560, 2580, 2752, 2880, 3072, 3096, 3440, 3840, 3870, 4128, 4608, 5120, 5160, 5504, 5760, 6192, 6880, 7680, 7740, 8256, 9216, 10320, 11008, 11520, 12384, 13760, 15360, 15480, 16512, 20640, 22016, 23040, 24768, 27520, 30960, 33024, 41280, 44032, 46080, 49536, 55040, 61920, 66048, 82560, 99072, 110080, 123840, 132096, 165120, 198144, 220160, 247680, 330240, 396288, 495360, 660480, 990720, 1981440]

約数ペア:

[(1, 1981440), (2, 990720), (3, 660480), (4, 495360), (5, 396288), (6, 330240), (8, 247680), (9, 220160), (10, 198144), (12, 165120), (15, 132096), (16, 123840), (18, 110080), (20, 99072), (24, 82560), (30, 66048), (32, 61920), (36, 55040), (40, 49536), (43, 46080), (45, 44032), (48, 41280), (60, 33024), (64, 30960), (72, 27520), (80, 24768), (86, 23040), (90, 22016), (96, 20640), (120, 16512), (128, 15480), (129, 15360), (144, 13760), (160, 12384), (172, 11520), (180, 11008), (192, 10320), (215, 9216), (240, 8256), (256, 7740), (258, 7680), (288, 6880), (320, 6192), (344, 5760), (360, 5504), (384, 5160), (387, 5120), (430, 4608), (480, 4128), (512, 3870), (516, 3840), (576, 3440), (640, 3096), (645, 3072), (688, 2880), (720, 2752), (768, 2580), (774, 2560), (860, 2304), (960, 2064), (1024, 1935), (1032, 1920), (1152, 1720), (1280, 1548), (1290, 1536), (1376, 1440)]