20961180

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 48752100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 227, 228, 243, 270, 285, 324, 342, 380, 405, 454, 486, 513, 540, 570, 681, 684, 810, 855, 908, 972, 1026, 1135, 1140, 1215, 1362, 1539, 1620, 1710, 2043, 2052, 2270, 2430, 2565, 2724, 3078, 3405, 3420, 4086, 4313, 4540, 4617, 4860, 5130, 6129, 6156, 6810, 7695, 8172, 8626, 9234, 10215, 10260, 12258, 12939, 13620, 15390, 17252, 18387, 18468, 20430, 21565, 23085, 24516, 25878, 30645, 30780, 36774, 38817, 40860, 43130, 46170, 51756, 55161, 61290, 64695, 73548, 77634, 86260, 91935, 92340, 110322, 116451, 122580, 129390, 155268, 183870, 194085, 220644, 232902, 258780, 275805, 349353, 367740, 388170, 465804, 551610, 582255, 698706, 776340, 1048059, 1103220, 1164510, 1397412, 1746765, 2096118, 2329020, 3493530, 4192236, 5240295, 6987060, 10480590, 20961180]

約数ペア:

[(1, 20961180), (2, 10480590), (3, 6987060), (4, 5240295), (5, 4192236), (6, 3493530), (9, 2329020), (10, 2096118), (12, 1746765), (15, 1397412), (18, 1164510), (19, 1103220), (20, 1048059), (27, 776340), (30, 698706), (36, 582255), (38, 551610), (45, 465804), (54, 388170), (57, 367740), (60, 349353), (76, 275805), (81, 258780), (90, 232902), (95, 220644), (108, 194085), (114, 183870), (135, 155268), (162, 129390), (171, 122580), (180, 116451), (190, 110322), (227, 92340), (228, 91935), (243, 86260), (270, 77634), (285, 73548), (324, 64695), (342, 61290), (380, 55161), (405, 51756), (454, 46170), (486, 43130), (513, 40860), (540, 38817), (570, 36774), (681, 30780), (684, 30645), (810, 25878), (855, 24516), (908, 23085), (972, 21565), (1026, 20430), (1135, 18468), (1140, 18387), (1215, 17252), (1362, 15390), (1539, 13620), (1620, 12939), (1710, 12258), (2043, 10260), (2052, 10215), (2270, 9234), (2430, 8626), (2565, 8172), (2724, 7695), (3078, 6810), (3405, 6156), (3420, 6129), (4086, 5130), (4313, 4860), (4540, 4617)]