81086080

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:178

約数の個数: 128

約数和(自身を含む): 206415360

約数和(自身を除く): 125329280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 67, 80, 122, 124, 128, 134, 155, 160, 244, 248, 268, 305, 310, 320, 335, 488, 496, 536, 610, 620, 640, 670, 976, 992, 1072, 1220, 1240, 1340, 1891, 1952, 1984, 2077, 2144, 2440, 2480, 2680, 3782, 3904, 3968, 4087, 4154, 4288, 4880, 4960, 5360, 7564, 7808, 8174, 8308, 8576, 9455, 9760, 9920, 10385, 10720, 15128, 16348, 16616, 18910, 19520, 19840, 20435, 20770, 21440, 30256, 32696, 33232, 37820, 39040, 40870, 41540, 42880, 60512, 65392, 66464, 75640, 81740, 83080, 121024, 126697, 130784, 132928, 151280, 163480, 166160, 242048, 253394, 261568, 265856, 302560, 326960, 332320, 506788, 523136, 605120, 633485, 653920, 664640, 1013576, 1210240, 1266970, 1307840, 1329280, 2027152, 2533940, 2615680, 4054304, 5067880, 8108608, 10135760, 16217216, 20271520, 40543040, 81086080]

約数ペア:

[(1, 81086080), (2, 40543040), (4, 20271520), (5, 16217216), (8, 10135760), (10, 8108608), (16, 5067880), (20, 4054304), (31, 2615680), (32, 2533940), (40, 2027152), (61, 1329280), (62, 1307840), (64, 1266970), (67, 1210240), (80, 1013576), (122, 664640), (124, 653920), (128, 633485), (134, 605120), (155, 523136), (160, 506788), (244, 332320), (248, 326960), (268, 302560), (305, 265856), (310, 261568), (320, 253394), (335, 242048), (488, 166160), (496, 163480), (536, 151280), (610, 132928), (620, 130784), (640, 126697), (670, 121024), (976, 83080), (992, 81740), (1072, 75640), (1220, 66464), (1240, 65392), (1340, 60512), (1891, 42880), (1952, 41540), (1984, 40870), (2077, 39040), (2144, 37820), (2440, 33232), (2480, 32696), (2680, 30256), (3782, 21440), (3904, 20770), (3968, 20435), (4087, 19840), (4154, 19520), (4288, 18910), (4880, 16616), (4960, 16348), (5360, 15128), (7564, 10720), (7808, 10385), (8174, 9920), (8308, 9760), (8576, 9455)]