257512554

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:477

約数の個数: 128

約数和(自身を含む): 660441600

約数和(自身を除く): 402929046

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 27, 39, 41, 46, 54, 69, 78, 82, 117, 123, 138, 207, 234, 246, 299, 351, 369, 389, 414, 533, 598, 621, 702, 738, 778, 897, 943, 1066, 1107, 1167, 1242, 1599, 1794, 1886, 2214, 2334, 2691, 2829, 3198, 3501, 4797, 5057, 5382, 5658, 7002, 8073, 8487, 8947, 9594, 10114, 10503, 12259, 14391, 15171, 15949, 16146, 16974, 17894, 21006, 24518, 25461, 26841, 28782, 30342, 31898, 36777, 45513, 47847, 50922, 53682, 73554, 80523, 91026, 95694, 110331, 116311, 136539, 143541, 161046, 207337, 220662, 232622, 241569, 273078, 287082, 330993, 348933, 366827, 414674, 430623, 483138, 622011, 661986, 697866, 733654, 861246, 1046799, 1100481, 1244022, 1866033, 2093598, 2200962, 3140397, 3301443, 3732066, 4768751, 5598099, 6280794, 6602886, 9537502, 9904329, 11196198, 14306253, 19808658, 28612506, 42918759, 85837518, 128756277, 257512554]

約数ペア:

[(1, 257512554), (2, 128756277), (3, 85837518), (6, 42918759), (9, 28612506), (13, 19808658), (18, 14306253), (23, 11196198), (26, 9904329), (27, 9537502), (39, 6602886), (41, 6280794), (46, 5598099), (54, 4768751), (69, 3732066), (78, 3301443), (82, 3140397), (117, 2200962), (123, 2093598), (138, 1866033), (207, 1244022), (234, 1100481), (246, 1046799), (299, 861246), (351, 733654), (369, 697866), (389, 661986), (414, 622011), (533, 483138), (598, 430623), (621, 414674), (702, 366827), (738, 348933), (778, 330993), (897, 287082), (943, 273078), (1066, 241569), (1107, 232622), (1167, 220662), (1242, 207337), (1599, 161046), (1794, 143541), (1886, 136539), (2214, 116311), (2334, 110331), (2691, 95694), (2829, 91026), (3198, 80523), (3501, 73554), (4797, 53682), (5057, 50922), (5382, 47847), (5658, 45513), (7002, 36777), (8073, 31898), (8487, 30342), (8947, 28782), (9594, 26841), (10114, 25461), (10503, 24518), (12259, 21006), (14391, 17894), (15171, 16974), (15949, 16146)]