81826360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:917

約数の個数: 128

約数和(自身を含む): 237219840

約数和(自身を除く): 155393480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 217, 220, 248, 280, 308, 310, 341, 385, 434, 440, 616, 620, 682, 770, 857, 868, 1085, 1240, 1364, 1540, 1705, 1714, 1736, 2170, 2387, 2728, 3080, 3410, 3428, 4285, 4340, 4774, 5999, 6820, 6856, 8570, 8680, 9427, 9548, 11935, 11998, 13640, 17140, 18854, 19096, 23870, 23996, 26567, 29995, 34280, 37708, 47135, 47740, 47992, 53134, 59990, 65989, 75416, 94270, 95480, 106268, 119980, 131978, 132835, 185969, 188540, 212536, 239960, 263956, 265670, 292237, 329945, 371938, 377080, 527912, 531340, 584474, 659890, 743876, 929845, 1062680, 1168948, 1319780, 1461185, 1487752, 1859690, 2045659, 2337896, 2639560, 2922370, 3719380, 4091318, 5844740, 7438760, 8182636, 10228295, 11689480, 16365272, 20456590, 40913180, 81826360]

約数ペア:

[(1, 81826360), (2, 40913180), (4, 20456590), (5, 16365272), (7, 11689480), (8, 10228295), (10, 8182636), (11, 7438760), (14, 5844740), (20, 4091318), (22, 3719380), (28, 2922370), (31, 2639560), (35, 2337896), (40, 2045659), (44, 1859690), (55, 1487752), (56, 1461185), (62, 1319780), (70, 1168948), (77, 1062680), (88, 929845), (110, 743876), (124, 659890), (140, 584474), (154, 531340), (155, 527912), (217, 377080), (220, 371938), (248, 329945), (280, 292237), (308, 265670), (310, 263956), (341, 239960), (385, 212536), (434, 188540), (440, 185969), (616, 132835), (620, 131978), (682, 119980), (770, 106268), (857, 95480), (868, 94270), (1085, 75416), (1240, 65989), (1364, 59990), (1540, 53134), (1705, 47992), (1714, 47740), (1736, 47135), (2170, 37708), (2387, 34280), (2728, 29995), (3080, 26567), (3410, 23996), (3428, 23870), (4285, 19096), (4340, 18854), (4774, 17140), (5999, 13640), (6820, 11998), (6856, 11935), (8570, 9548), (8680, 9427)]