257703680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{911}}^1$

素因数の和:962

約数の個数: 144

約数和(自身を含む): 704640384

約数和(自身を除く): 446936704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 256, 260, 272, 320, 340, 416, 442, 520, 544, 640, 680, 832, 884, 911, 1040, 1088, 1105, 1280, 1360, 1664, 1768, 1822, 2080, 2176, 2210, 2720, 3328, 3536, 3644, 4160, 4352, 4420, 4555, 5440, 7072, 7288, 8320, 8840, 9110, 10880, 11843, 14144, 14576, 15487, 16640, 17680, 18220, 21760, 23686, 28288, 29152, 30974, 35360, 36440, 47372, 56576, 58304, 59215, 61948, 70720, 72880, 77435, 94744, 116608, 118430, 123896, 141440, 145760, 154870, 189488, 201331, 233216, 236860, 247792, 282880, 291520, 309740, 378976, 402662, 473720, 495584, 583040, 619480, 757952, 805324, 947440, 991168, 1006655, 1166080, 1238960, 1515904, 1610648, 1894880, 1982336, 2013310, 2477920, 3031808, 3221296, 3789760, 3964672, 4026620, 4955840, 6442592, 7579520, 8053240, 9911680, 12885184, 15159040, 16106480, 19823360, 25770368, 32212960, 51540736, 64425920, 128851840, 257703680]

約数ペア:

[(1, 257703680), (2, 128851840), (4, 64425920), (5, 51540736), (8, 32212960), (10, 25770368), (13, 19823360), (16, 16106480), (17, 15159040), (20, 12885184), (26, 9911680), (32, 8053240), (34, 7579520), (40, 6442592), (52, 4955840), (64, 4026620), (65, 3964672), (68, 3789760), (80, 3221296), (85, 3031808), (104, 2477920), (128, 2013310), (130, 1982336), (136, 1894880), (160, 1610648), (170, 1515904), (208, 1238960), (221, 1166080), (256, 1006655), (260, 991168), (272, 947440), (320, 805324), (340, 757952), (416, 619480), (442, 583040), (520, 495584), (544, 473720), (640, 402662), (680, 378976), (832, 309740), (884, 291520), (911, 282880), (1040, 247792), (1088, 236860), (1105, 233216), (1280, 201331), (1360, 189488), (1664, 154870), (1768, 145760), (1822, 141440), (2080, 123896), (2176, 118430), (2210, 116608), (2720, 94744), (3328, 77435), (3536, 72880), (3644, 70720), (4160, 61948), (4352, 59215), (4420, 58304), (4555, 56576), (5440, 47372), (7072, 36440), (7288, 35360), (8320, 30974), (8840, 29152), (9110, 28288), (10880, 23686), (11843, 21760), (14144, 18220), (14576, 17680), (15487, 16640)]