28643580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{179}}^1$

素因数の和:328

約数の個数: 144

約数和(自身を含む): 100638720

約数和(自身を除く): 71995140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 127, 140, 179, 180, 210, 252, 254, 315, 358, 381, 420, 508, 537, 630, 635, 716, 762, 889, 895, 1074, 1143, 1253, 1260, 1270, 1524, 1611, 1778, 1790, 1905, 2148, 2286, 2506, 2540, 2667, 2685, 3222, 3556, 3580, 3759, 3810, 4445, 4572, 5012, 5334, 5370, 5715, 6265, 6444, 7518, 7620, 8001, 8055, 8890, 10668, 10740, 11277, 11430, 12530, 13335, 15036, 16002, 16110, 17780, 18795, 22554, 22733, 22860, 25060, 26670, 32004, 32220, 37590, 40005, 45108, 45466, 53340, 56385, 68199, 75180, 80010, 90932, 112770, 113665, 136398, 159131, 160020, 204597, 225540, 227330, 272796, 318262, 340995, 409194, 454660, 477393, 636524, 681990, 795655, 818388, 954786, 1022985, 1363980, 1432179, 1591310, 1909572, 2045970, 2386965, 2864358, 3182620, 4091940, 4773930, 5728716, 7160895, 9547860, 14321790, 28643580]

約数ペア:

[(1, 28643580), (2, 14321790), (3, 9547860), (4, 7160895), (5, 5728716), (6, 4773930), (7, 4091940), (9, 3182620), (10, 2864358), (12, 2386965), (14, 2045970), (15, 1909572), (18, 1591310), (20, 1432179), (21, 1363980), (28, 1022985), (30, 954786), (35, 818388), (36, 795655), (42, 681990), (45, 636524), (60, 477393), (63, 454660), (70, 409194), (84, 340995), (90, 318262), (105, 272796), (126, 227330), (127, 225540), (140, 204597), (179, 160020), (180, 159131), (210, 136398), (252, 113665), (254, 112770), (315, 90932), (358, 80010), (381, 75180), (420, 68199), (508, 56385), (537, 53340), (630, 45466), (635, 45108), (716, 40005), (762, 37590), (889, 32220), (895, 32004), (1074, 26670), (1143, 25060), (1253, 22860), (1260, 22733), (1270, 22554), (1524, 18795), (1611, 17780), (1778, 16110), (1790, 16002), (1905, 15036), (2148, 13335), (2286, 12530), (2506, 11430), (2540, 11277), (2667, 10740), (2685, 10668), (3222, 8890), (3556, 8055), (3580, 8001), (3759, 7620), (3810, 7518), (4445, 6444), (4572, 6265), (5012, 5715), (5334, 5370)]