19948320

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{1979}}^1$

素因数の和:2007

約数の個数: 144

約数和(自身を含む): 77837760

約数和(自身を除く): 57889440

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, 1979, 2016, 2520, 3360, 3958, 5040, 5937, 7916, 9895, 10080, 11874, 13853, 15832, 17811, 19790, 23748, 27706, 29685, 31664, 35622, 39580, 41559, 47496, 55412, 59370, 63328, 69265, 71244, 79160, 83118, 89055, 94992, 110824, 118740, 124677, 138530, 142488, 158320, 166236, 178110, 189984, 207795, 221648, 237480, 249354, 277060, 284976, 316640, 332472, 356220, 415590, 443296, 474960, 498708, 554120, 569952, 623385, 664944, 712440, 831180, 949920, 997416, 1108240, 1246770, 1329888, 1424880, 1662360, 1994832, 2216480, 2493540, 2849760, 3324720, 3989664, 4987080, 6649440, 9974160, 19948320]

約数ペア:

[(1, 19948320), (2, 9974160), (3, 6649440), (4, 4987080), (5, 3989664), (6, 3324720), (7, 2849760), (8, 2493540), (9, 2216480), (10, 1994832), (12, 1662360), (14, 1424880), (15, 1329888), (16, 1246770), (18, 1108240), (20, 997416), (21, 949920), (24, 831180), (28, 712440), (30, 664944), (32, 623385), (35, 569952), (36, 554120), (40, 498708), (42, 474960), (45, 443296), (48, 415590), (56, 356220), (60, 332472), (63, 316640), (70, 284976), (72, 277060), (80, 249354), (84, 237480), (90, 221648), (96, 207795), (105, 189984), (112, 178110), (120, 166236), (126, 158320), (140, 142488), (144, 138530), (160, 124677), (168, 118740), (180, 110824), (210, 94992), (224, 89055), (240, 83118), (252, 79160), (280, 71244), (288, 69265), (315, 63328), (336, 59370), (360, 55412), (420, 47496), (480, 41559), (504, 39580), (560, 35622), (630, 31664), (672, 29685), (720, 27706), (840, 23748), (1008, 19790), (1120, 17811), (1260, 15832), (1440, 13853), (1680, 11874), (1979, 10080), (2016, 9895), (2520, 7916), (3360, 5937), (3958, 5040)]