721301490

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:1014

約数の個数: 256

約数和(自身を含む): 2446295040

約数和(自身を除く): 1724993550

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 27, 30, 31, 35, 39, 42, 45, 54, 62, 63, 65, 70, 78, 90, 91, 93, 105, 117, 126, 130, 135, 155, 182, 186, 189, 195, 210, 217, 234, 270, 273, 279, 310, 315, 351, 378, 390, 403, 434, 455, 465, 546, 558, 585, 630, 651, 702, 806, 819, 837, 910, 930, 945, 947, 1085, 1170, 1209, 1302, 1365, 1395, 1638, 1674, 1755, 1890, 1894, 1953, 2015, 2170, 2418, 2457, 2730, 2790, 2821, 2841, 3255, 3510, 3627, 3906, 4030, 4095, 4185, 4735, 4914, 5642, 5682, 5859, 6045, 6510, 6629, 7254, 8190, 8370, 8463, 8523, 9470, 9765, 10881, 11718, 12090, 12285, 12311, 13258, 14105, 14205, 16926, 17046, 18135, 19530, 19887, 21762, 24570, 24622, 25389, 25569, 28210, 28410, 29295, 29357, 33145, 36270, 36933, 39774, 42315, 42615, 50778, 51138, 54405, 58590, 58714, 59661, 61555, 66290, 73866, 76167, 84630, 85230, 86177, 88071, 99435, 108810, 110799, 119322, 123110, 126945, 127845, 146785, 152334, 172354, 176142, 178983, 184665, 198870, 205499, 221598, 253890, 255690, 258531, 264213, 293570, 298305, 332397, 357966, 369330, 380835, 381641, 410998, 430885, 440355, 517062, 528426, 553995, 596610, 616497, 664794, 761670, 763282, 775593, 792639, 861770, 880710, 894915, 1027495, 1107990, 1144923, 1232994, 1292655, 1321065, 1551186, 1585278, 1661985, 1789830, 1849491, 1908205, 2054990, 2289846, 2326779, 2585310, 2642130, 2671487, 3082485, 3323970, 3434769, 3698982, 3816410, 3877965, 3963195, 4653558, 5342974, 5548473, 5724615, 6164970, 6869538, 7755930, 7926390, 8014461, 9247455, 10304307, 11096946, 11449230, 11633895, 13357435, 16028922, 17173845, 18494910, 20608614, 23267790, 24043383, 26714870, 27742365, 34347690, 40072305, 48086766, 51521535, 55484730, 72130149, 80144610, 103043070, 120216915, 144260298, 240433830, 360650745, 721301490]

約数ペア:

[(1, 721301490), (2, 360650745), (3, 240433830), (5, 144260298), (6, 120216915), (7, 103043070), (9, 80144610), (10, 72130149), (13, 55484730), (14, 51521535), (15, 48086766), (18, 40072305), (21, 34347690), (26, 27742365), (27, 26714870), (30, 24043383), (31, 23267790), (35, 20608614), (39, 18494910), (42, 17173845), (45, 16028922), (54, 13357435), (62, 11633895), (63, 11449230), (65, 11096946), (70, 10304307), (78, 9247455), (90, 8014461), (91, 7926390), (93, 7755930), (105, 6869538), (117, 6164970), (126, 5724615), (130, 5548473), (135, 5342974), (155, 4653558), (182, 3963195), (186, 3877965), (189, 3816410), (195, 3698982), (210, 3434769), (217, 3323970), (234, 3082485), (270, 2671487), (273, 2642130), (279, 2585310), (310, 2326779), (315, 2289846), (351, 2054990), (378, 1908205), (390, 1849491), (403, 1789830), (434, 1661985), (455, 1585278), (465, 1551186), (546, 1321065), (558, 1292655), (585, 1232994), (630, 1144923), (651, 1107990), (702, 1027495), (806, 894915), (819, 880710), (837, 861770), (910, 792639), (930, 775593), (945, 763282), (947, 761670), (1085, 664794), (1170, 616497), (1209, 596610), (1302, 553995), (1365, 528426), (1395, 517062), (1638, 440355), (1674, 430885), (1755, 410998), (1890, 381641), (1894, 380835), (1953, 369330), (2015, 357966), (2170, 332397), (2418, 298305), (2457, 293570), (2730, 264213), (2790, 258531), (2821, 255690), (2841, 253890), (3255, 221598), (3510, 205499), (3627, 198870), (3906, 184665), (4030, 178983), (4095, 176142), (4185, 172354), (4735, 152334), (4914, 146785), (5642, 127845), (5682, 126945), (5859, 123110), (6045, 119322), (6510, 110799), (6629, 108810), (7254, 99435), (8190, 88071), (8370, 86177), (8463, 85230), (8523, 84630), (9470, 76167), (9765, 73866), (10881, 66290), (11718, 61555), (12090, 59661), (12285, 58714), (12311, 58590), (13258, 54405), (14105, 51138), (14205, 50778), (16926, 42615), (17046, 42315), (18135, 39774), (19530, 36933), (19887, 36270), (21762, 33145), (24570, 29357), (24622, 29295), (25389, 28410), (25569, 28210)]