990720

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{43}}^1$

素因数の和:72

約数の個数: 120

約数和(自身を含む): 3510936

約数和(自身を除く): 2520216

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, 1032, 1152, 1280, 1290, 1376, 1440, 1536, 1548, 1720, 1920, 1935, 2064, 2304, 2560, 2580, 2752, 2880, 3096, 3440, 3840, 3870, 4128, 4608, 5160, 5504, 5760, 6192, 6880, 7680, 7740, 8256, 10320, 11008, 11520, 12384, 13760, 15480, 16512, 20640, 22016, 23040, 24768, 27520, 30960, 33024, 41280, 49536, 55040, 61920, 66048, 82560, 99072, 110080, 123840, 165120, 198144, 247680, 330240, 495360, 990720]

約数ペア:

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