161280

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1$

素因数の和:36

約数の個数: 120

約数和(自身を含む): 638352

約数和(自身を除く): 477072

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 512, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1120, 1152, 1260, 1280, 1344, 1440, 1536, 1680, 1792, 1920, 2016, 2240, 2304, 2520, 2560, 2688, 2880, 3360, 3584, 3840, 4032, 4480, 4608, 5040, 5376, 5760, 6720, 7680, 8064, 8960, 10080, 10752, 11520, 13440, 16128, 17920, 20160, 23040, 26880, 32256, 40320, 53760, 80640, 161280]

約数ペア:

[(1, 161280), (2, 80640), (3, 53760), (4, 40320), (5, 32256), (6, 26880), (7, 23040), (8, 20160), (9, 17920), (10, 16128), (12, 13440), (14, 11520), (15, 10752), (16, 10080), (18, 8960), (20, 8064), (21, 7680), (24, 6720), (28, 5760), (30, 5376), (32, 5040), (35, 4608), (36, 4480), (40, 4032), (42, 3840), (45, 3584), (48, 3360), (56, 2880), (60, 2688), (63, 2560), (64, 2520), (70, 2304), (72, 2240), (80, 2016), (84, 1920), (90, 1792), (96, 1680), (105, 1536), (112, 1440), (120, 1344), (126, 1280), (128, 1260), (140, 1152), (144, 1120), (160, 1008), (168, 960), (180, 896), (192, 840), (210, 768), (224, 720), (240, 672), (252, 640), (256, 630), (280, 576), (288, 560), (315, 512), (320, 504), (336, 480), (360, 448), (384, 420)]