20976480

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2081}}^1$

素因数の和:2109

約数の個数: 144

約数和(自身を含む): 81847584

約数和(自身を除く): 60871104

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, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2081, 2520, 3360, 4162, 5040, 6243, 8324, 10080, 10405, 12486, 14567, 16648, 18729, 20810, 24972, 29134, 31215, 33296, 37458, 41620, 43701, 49944, 58268, 62430, 66592, 72835, 74916, 83240, 87402, 93645, 99888, 116536, 124860, 131103, 145670, 149832, 166480, 174804, 187290, 199776, 218505, 233072, 249720, 262206, 291340, 299664, 332960, 349608, 374580, 437010, 466144, 499440, 524412, 582680, 599328, 655515, 699216, 749160, 874020, 998880, 1048824, 1165360, 1311030, 1398432, 1498320, 1748040, 2097648, 2330720, 2622060, 2996640, 3496080, 4195296, 5244120, 6992160, 10488240, 20976480]

約数ペア:

[(1, 20976480), (2, 10488240), (3, 6992160), (4, 5244120), (5, 4195296), (6, 3496080), (7, 2996640), (8, 2622060), (9, 2330720), (10, 2097648), (12, 1748040), (14, 1498320), (15, 1398432), (16, 1311030), (18, 1165360), (20, 1048824), (21, 998880), (24, 874020), (28, 749160), (30, 699216), (32, 655515), (35, 599328), (36, 582680), (40, 524412), (42, 499440), (45, 466144), (48, 437010), (56, 374580), (60, 349608), (63, 332960), (70, 299664), (72, 291340), (80, 262206), (84, 249720), (90, 233072), (96, 218505), (105, 199776), (112, 187290), (120, 174804), (126, 166480), (140, 149832), (144, 145670), (160, 131103), (168, 124860), (180, 116536), (210, 99888), (224, 93645), (240, 87402), (252, 83240), (280, 74916), (288, 72835), (315, 66592), (336, 62430), (360, 58268), (420, 49944), (480, 43701), (504, 41620), (560, 37458), (630, 33296), (672, 31215), (720, 29134), (840, 24972), (1008, 20810), (1120, 18729), (1260, 16648), (1440, 14567), (1680, 12486), (2016, 10405), (2081, 10080), (2520, 8324), (3360, 6243), (4162, 5040)]