81335280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:359

約数の個数: 160

約数和(自身を含む): 274982400

約数和(自身を除く): 193647120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 131, 156, 195, 199, 208, 240, 260, 262, 312, 390, 393, 398, 520, 524, 597, 624, 655, 780, 786, 796, 995, 1040, 1048, 1194, 1310, 1560, 1572, 1592, 1703, 1965, 1990, 2096, 2388, 2587, 2620, 2985, 3120, 3144, 3184, 3406, 3930, 3980, 4776, 5109, 5174, 5240, 5970, 6288, 6812, 7761, 7860, 7960, 8515, 9552, 10218, 10348, 10480, 11940, 12935, 13624, 15522, 15720, 15920, 17030, 20436, 20696, 23880, 25545, 25870, 26069, 27248, 31044, 31440, 34060, 38805, 40872, 41392, 47760, 51090, 51740, 52138, 62088, 68120, 77610, 78207, 81744, 102180, 103480, 104276, 124176, 130345, 136240, 155220, 156414, 204360, 206960, 208552, 260690, 310440, 312828, 338897, 391035, 408720, 417104, 521380, 620880, 625656, 677794, 782070, 1016691, 1042760, 1251312, 1355588, 1564140, 1694485, 2033382, 2085520, 2711176, 3128280, 3388970, 4066764, 5083455, 5422352, 6256560, 6777940, 8133528, 10166910, 13555880, 16267056, 20333820, 27111760, 40667640, 81335280]

約数ペア:

[(1, 81335280), (2, 40667640), (3, 27111760), (4, 20333820), (5, 16267056), (6, 13555880), (8, 10166910), (10, 8133528), (12, 6777940), (13, 6256560), (15, 5422352), (16, 5083455), (20, 4066764), (24, 3388970), (26, 3128280), (30, 2711176), (39, 2085520), (40, 2033382), (48, 1694485), (52, 1564140), (60, 1355588), (65, 1251312), (78, 1042760), (80, 1016691), (104, 782070), (120, 677794), (130, 625656), (131, 620880), (156, 521380), (195, 417104), (199, 408720), (208, 391035), (240, 338897), (260, 312828), (262, 310440), (312, 260690), (390, 208552), (393, 206960), (398, 204360), (520, 156414), (524, 155220), (597, 136240), (624, 130345), (655, 124176), (780, 104276), (786, 103480), (796, 102180), (995, 81744), (1040, 78207), (1048, 77610), (1194, 68120), (1310, 62088), (1560, 52138), (1572, 51740), (1592, 51090), (1703, 47760), (1965, 41392), (1990, 40872), (2096, 38805), (2388, 34060), (2587, 31440), (2620, 31044), (2985, 27248), (3120, 26069), (3144, 25870), (3184, 25545), (3406, 23880), (3930, 20696), (3980, 20436), (4776, 17030), (5109, 15920), (5174, 15720), (5240, 15522), (5970, 13624), (6288, 12935), (6812, 11940), (7761, 10480), (7860, 10348), (7960, 10218), (8515, 9552)]