81428256

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:288

約数の個数: 216

約数和(自身を含む): 287763840

約数和(自身を除く): 206335584

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 52, 56, 63, 72, 78, 84, 91, 96, 104, 112, 117, 126, 144, 156, 168, 169, 182, 208, 224, 234, 239, 252, 273, 288, 312, 336, 338, 364, 416, 468, 478, 504, 507, 546, 624, 672, 676, 717, 728, 819, 936, 956, 1008, 1014, 1092, 1183, 1248, 1352, 1434, 1456, 1521, 1638, 1673, 1872, 1912, 2016, 2028, 2151, 2184, 2366, 2704, 2868, 2912, 3042, 3107, 3276, 3346, 3549, 3744, 3824, 4056, 4302, 4368, 4732, 5019, 5408, 5736, 6084, 6214, 6552, 6692, 7098, 7648, 8112, 8604, 8736, 9321, 9464, 10038, 10647, 11472, 12168, 12428, 13104, 13384, 14196, 15057, 16224, 17208, 18642, 18928, 20076, 21294, 21749, 22944, 24336, 24856, 26208, 26768, 27963, 28392, 30114, 34416, 37284, 37856, 40152, 40391, 42588, 43498, 48672, 49712, 53536, 55926, 56784, 60228, 65247, 68832, 74568, 80304, 80782, 85176, 86996, 99424, 111852, 113568, 120456, 121173, 130494, 149136, 160608, 161564, 170352, 173992, 195741, 223704, 240912, 242346, 260988, 282737, 298272, 323128, 340704, 347984, 363519, 391482, 447408, 481824, 484692, 521976, 565474, 646256, 695968, 727038, 782964, 848211, 894816, 969384, 1043952, 1130948, 1292512, 1454076, 1565928, 1696422, 1938768, 2087904, 2261896, 2544633, 2908152, 3131856, 3392844, 3877536, 4523792, 5089266, 5816304, 6263712, 6785688, 9047584, 10178532, 11632608, 13571376, 20357064, 27142752, 40714128, 81428256]

約数ペア:

[(1, 81428256), (2, 40714128), (3, 27142752), (4, 20357064), (6, 13571376), (7, 11632608), (8, 10178532), (9, 9047584), (12, 6785688), (13, 6263712), (14, 5816304), (16, 5089266), (18, 4523792), (21, 3877536), (24, 3392844), (26, 3131856), (28, 2908152), (32, 2544633), (36, 2261896), (39, 2087904), (42, 1938768), (48, 1696422), (52, 1565928), (56, 1454076), (63, 1292512), (72, 1130948), (78, 1043952), (84, 969384), (91, 894816), (96, 848211), (104, 782964), (112, 727038), (117, 695968), (126, 646256), (144, 565474), (156, 521976), (168, 484692), (169, 481824), (182, 447408), (208, 391482), (224, 363519), (234, 347984), (239, 340704), (252, 323128), (273, 298272), (288, 282737), (312, 260988), (336, 242346), (338, 240912), (364, 223704), (416, 195741), (468, 173992), (478, 170352), (504, 161564), (507, 160608), (546, 149136), (624, 130494), (672, 121173), (676, 120456), (717, 113568), (728, 111852), (819, 99424), (936, 86996), (956, 85176), (1008, 80782), (1014, 80304), (1092, 74568), (1183, 68832), (1248, 65247), (1352, 60228), (1434, 56784), (1456, 55926), (1521, 53536), (1638, 49712), (1673, 48672), (1872, 43498), (1912, 42588), (2016, 40391), (2028, 40152), (2151, 37856), (2184, 37284), (2366, 34416), (2704, 30114), (2868, 28392), (2912, 27963), (3042, 26768), (3107, 26208), (3276, 24856), (3346, 24336), (3549, 22944), (3744, 21749), (3824, 21294), (4056, 20076), (4302, 18928), (4368, 18642), (4732, 17208), (5019, 16224), (5408, 15057), (5736, 14196), (6084, 13384), (6214, 13104), (6552, 12428), (6692, 12168), (7098, 11472), (7648, 10647), (8112, 10038), (8604, 9464), (8736, 9321)]