81221808

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:179

約数の個数: 160

約数和(自身を含む): 237484800

約数和(自身を除く): 156262992

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 29, 37, 38, 48, 57, 58, 74, 76, 83, 87, 111, 114, 116, 148, 152, 166, 174, 222, 228, 232, 249, 296, 304, 332, 348, 444, 456, 464, 498, 551, 592, 664, 696, 703, 888, 912, 996, 1073, 1102, 1328, 1392, 1406, 1577, 1653, 1776, 1992, 2109, 2146, 2204, 2407, 2812, 3071, 3154, 3219, 3306, 3984, 4218, 4292, 4408, 4731, 4814, 5624, 6142, 6308, 6438, 6612, 7221, 8436, 8584, 8816, 9213, 9462, 9628, 11248, 12284, 12616, 12876, 13224, 14442, 16872, 17168, 18426, 18924, 19256, 20387, 24568, 25232, 25752, 26448, 28884, 33744, 36852, 37848, 38512, 40774, 45733, 49136, 51504, 57768, 58349, 61161, 73704, 75696, 81548, 89059, 91466, 115536, 116698, 122322, 137199, 147408, 163096, 175047, 178118, 182932, 233396, 244644, 267177, 274398, 326192, 350094, 356236, 365864, 466792, 489288, 534354, 548796, 700188, 712472, 731728, 933584, 978576, 1068708, 1097592, 1400376, 1424944, 1692121, 2137416, 2195184, 2800752, 3384242, 4274832, 5076363, 6768484, 10152726, 13536968, 20305452, 27073936, 40610904, 81221808]

約数ペア:

[(1, 81221808), (2, 40610904), (3, 27073936), (4, 20305452), (6, 13536968), (8, 10152726), (12, 6768484), (16, 5076363), (19, 4274832), (24, 3384242), (29, 2800752), (37, 2195184), (38, 2137416), (48, 1692121), (57, 1424944), (58, 1400376), (74, 1097592), (76, 1068708), (83, 978576), (87, 933584), (111, 731728), (114, 712472), (116, 700188), (148, 548796), (152, 534354), (166, 489288), (174, 466792), (222, 365864), (228, 356236), (232, 350094), (249, 326192), (296, 274398), (304, 267177), (332, 244644), (348, 233396), (444, 182932), (456, 178118), (464, 175047), (498, 163096), (551, 147408), (592, 137199), (664, 122322), (696, 116698), (703, 115536), (888, 91466), (912, 89059), (996, 81548), (1073, 75696), (1102, 73704), (1328, 61161), (1392, 58349), (1406, 57768), (1577, 51504), (1653, 49136), (1776, 45733), (1992, 40774), (2109, 38512), (2146, 37848), (2204, 36852), (2407, 33744), (2812, 28884), (3071, 26448), (3154, 25752), (3219, 25232), (3306, 24568), (3984, 20387), (4218, 19256), (4292, 18924), (4408, 18426), (4731, 17168), (4814, 16872), (5624, 14442), (6142, 13224), (6308, 12876), (6438, 12616), (6612, 12284), (7221, 11248), (8436, 9628), (8584, 9462), (8816, 9213)]