20642580

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:195

約数の個数: 192

約数和(自身を含む): 75694080

約数和(自身を除く): 55051500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 43, 45, 54, 60, 63, 70, 84, 86, 90, 105, 108, 126, 127, 129, 135, 140, 172, 180, 189, 210, 215, 252, 254, 258, 270, 301, 315, 378, 381, 387, 420, 430, 508, 516, 540, 602, 630, 635, 645, 756, 762, 774, 860, 889, 903, 945, 1143, 1161, 1204, 1260, 1270, 1290, 1505, 1524, 1548, 1778, 1806, 1890, 1905, 1935, 2286, 2322, 2540, 2580, 2667, 2709, 3010, 3429, 3556, 3612, 3780, 3810, 3870, 4445, 4515, 4572, 4644, 5334, 5418, 5461, 5715, 5805, 6020, 6858, 7620, 7740, 8001, 8127, 8890, 9030, 10668, 10836, 10922, 11430, 11610, 13335, 13545, 13716, 16002, 16254, 16383, 17145, 17780, 18060, 21844, 22860, 23220, 24003, 26670, 27090, 27305, 32004, 32508, 32766, 34290, 38227, 40005, 40635, 48006, 49149, 53340, 54180, 54610, 65532, 68580, 76454, 80010, 81270, 81915, 96012, 98298, 109220, 114681, 120015, 147447, 152908, 160020, 162540, 163830, 191135, 196596, 229362, 240030, 245745, 294894, 327660, 344043, 382270, 458724, 480060, 491490, 573405, 589788, 688086, 737235, 764540, 982980, 1032129, 1146810, 1376172, 1474470, 1720215, 2064258, 2293620, 2948940, 3440430, 4128516, 5160645, 6880860, 10321290, 20642580]

約数ペア:

[(1, 20642580), (2, 10321290), (3, 6880860), (4, 5160645), (5, 4128516), (6, 3440430), (7, 2948940), (9, 2293620), (10, 2064258), (12, 1720215), (14, 1474470), (15, 1376172), (18, 1146810), (20, 1032129), (21, 982980), (27, 764540), (28, 737235), (30, 688086), (35, 589788), (36, 573405), (42, 491490), (43, 480060), (45, 458724), (54, 382270), (60, 344043), (63, 327660), (70, 294894), (84, 245745), (86, 240030), (90, 229362), (105, 196596), (108, 191135), (126, 163830), (127, 162540), (129, 160020), (135, 152908), (140, 147447), (172, 120015), (180, 114681), (189, 109220), (210, 98298), (215, 96012), (252, 81915), (254, 81270), (258, 80010), (270, 76454), (301, 68580), (315, 65532), (378, 54610), (381, 54180), (387, 53340), (420, 49149), (430, 48006), (508, 40635), (516, 40005), (540, 38227), (602, 34290), (630, 32766), (635, 32508), (645, 32004), (756, 27305), (762, 27090), (774, 26670), (860, 24003), (889, 23220), (903, 22860), (945, 21844), (1143, 18060), (1161, 17780), (1204, 17145), (1260, 16383), (1270, 16254), (1290, 16002), (1505, 13716), (1524, 13545), (1548, 13335), (1778, 11610), (1806, 11430), (1890, 10922), (1905, 10836), (1935, 10668), (2286, 9030), (2322, 8890), (2540, 8127), (2580, 8001), (2667, 7740), (2709, 7620), (3010, 6858), (3429, 6020), (3556, 5805), (3612, 5715), (3780, 5461), (3810, 5418), (3870, 5334), (4445, 4644), (4515, 4572)]