28474740

素因数分解:

$2^2\times 3^8\times 5^1\times 7^1\times {\mathrm{31}}^1$

素因数の和:71

約数の個数: 216

約数和(自身を含む): 105810432

約数和(自身を除く): 77335692

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 60, 62, 63, 70, 81, 84, 90, 93, 105, 108, 124, 126, 135, 140, 155, 162, 180, 186, 189, 210, 217, 243, 252, 270, 279, 310, 315, 324, 372, 378, 405, 420, 434, 465, 486, 540, 558, 567, 620, 630, 651, 729, 756, 810, 837, 868, 930, 945, 972, 1085, 1116, 1134, 1215, 1260, 1302, 1395, 1458, 1620, 1674, 1701, 1860, 1890, 1953, 2170, 2187, 2268, 2430, 2511, 2604, 2790, 2835, 2916, 3255, 3348, 3402, 3645, 3780, 3906, 4185, 4340, 4374, 4860, 5022, 5103, 5580, 5670, 5859, 6510, 6561, 6804, 7290, 7533, 7812, 8370, 8505, 8748, 9765, 10044, 10206, 10935, 11340, 11718, 12555, 13020, 13122, 14580, 15066, 15309, 16740, 17010, 17577, 19530, 20412, 21870, 22599, 23436, 25110, 25515, 26244, 29295, 30132, 30618, 32805, 34020, 35154, 37665, 39060, 43740, 45198, 45927, 50220, 51030, 52731, 58590, 61236, 65610, 67797, 70308, 75330, 76545, 87885, 90396, 91854, 102060, 105462, 112995, 117180, 131220, 135594, 150660, 153090, 158193, 175770, 183708, 203391, 210924, 225990, 229635, 263655, 271188, 306180, 316386, 338985, 351540, 406782, 451980, 459270, 474579, 527310, 632772, 677970, 790965, 813564, 918540, 949158, 1016955, 1054620, 1355940, 1423737, 1581930, 1898316, 2033910, 2372895, 2847474, 3163860, 4067820, 4745790, 5694948, 7118685, 9491580, 14237370, 28474740]

約数ペア:

[(1, 28474740), (2, 14237370), (3, 9491580), (4, 7118685), (5, 5694948), (6, 4745790), (7, 4067820), (9, 3163860), (10, 2847474), (12, 2372895), (14, 2033910), (15, 1898316), (18, 1581930), (20, 1423737), (21, 1355940), (27, 1054620), (28, 1016955), (30, 949158), (31, 918540), (35, 813564), (36, 790965), (42, 677970), (45, 632772), (54, 527310), (60, 474579), (62, 459270), (63, 451980), (70, 406782), (81, 351540), (84, 338985), (90, 316386), (93, 306180), (105, 271188), (108, 263655), (124, 229635), (126, 225990), (135, 210924), (140, 203391), (155, 183708), (162, 175770), (180, 158193), (186, 153090), (189, 150660), (210, 135594), (217, 131220), (243, 117180), (252, 112995), (270, 105462), (279, 102060), (310, 91854), (315, 90396), (324, 87885), (372, 76545), (378, 75330), (405, 70308), (420, 67797), (434, 65610), (465, 61236), (486, 58590), (540, 52731), (558, 51030), (567, 50220), (620, 45927), (630, 45198), (651, 43740), (729, 39060), (756, 37665), (810, 35154), (837, 34020), (868, 32805), (930, 30618), (945, 30132), (972, 29295), (1085, 26244), (1116, 25515), (1134, 25110), (1215, 23436), (1260, 22599), (1302, 21870), (1395, 20412), (1458, 19530), (1620, 17577), (1674, 17010), (1701, 16740), (1860, 15309), (1890, 15066), (1953, 14580), (2170, 13122), (2187, 13020), (2268, 12555), (2430, 11718), (2511, 11340), (2604, 10935), (2790, 10206), (2835, 10044), (2916, 9765), (3255, 8748), (3348, 8505), (3402, 8370), (3645, 7812), (3780, 7533), (3906, 7290), (4185, 6804), (4340, 6561), (4374, 6510), (4860, 5859), (5022, 5670), (5103, 5580)]