2546571880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:491

約数の個数: 128

約数和(自身を含む): 6081039360

約数和(自身を除く): 3534467480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 131, 155, 244, 248, 257, 262, 305, 310, 488, 514, 524, 610, 620, 655, 1028, 1048, 1220, 1240, 1285, 1310, 1891, 2056, 2440, 2570, 2620, 3782, 4061, 5140, 5240, 7564, 7967, 7991, 8122, 9455, 10280, 15128, 15677, 15934, 15982, 16244, 18910, 20305, 31354, 31868, 31964, 32488, 33667, 37820, 39835, 39955, 40610, 62708, 63736, 63928, 67334, 75640, 78385, 79670, 79910, 81220, 125416, 134668, 156770, 159340, 159820, 162440, 168335, 247721, 269336, 313540, 318680, 319640, 336670, 485987, 495442, 627080, 673340, 971974, 990884, 1043677, 1238605, 1346680, 1943948, 1981768, 2053687, 2087354, 2429935, 2477210, 3887896, 4107374, 4174708, 4859870, 4954420, 5218385, 8214748, 8349416, 9719740, 9908840, 10268435, 10436770, 16429496, 19439480, 20536870, 20873540, 41073740, 41747080, 63664297, 82147480, 127328594, 254657188, 318321485, 509314376, 636642970, 1273285940, 2546571880]

約数ペア:

[(1, 2546571880), (2, 1273285940), (4, 636642970), (5, 509314376), (8, 318321485), (10, 254657188), (20, 127328594), (31, 82147480), (40, 63664297), (61, 41747080), (62, 41073740), (122, 20873540), (124, 20536870), (131, 19439480), (155, 16429496), (244, 10436770), (248, 10268435), (257, 9908840), (262, 9719740), (305, 8349416), (310, 8214748), (488, 5218385), (514, 4954420), (524, 4859870), (610, 4174708), (620, 4107374), (655, 3887896), (1028, 2477210), (1048, 2429935), (1220, 2087354), (1240, 2053687), (1285, 1981768), (1310, 1943948), (1891, 1346680), (2056, 1238605), (2440, 1043677), (2570, 990884), (2620, 971974), (3782, 673340), (4061, 627080), (5140, 495442), (5240, 485987), (7564, 336670), (7967, 319640), (7991, 318680), (8122, 313540), (9455, 269336), (10280, 247721), (15128, 168335), (15677, 162440), (15934, 159820), (15982, 159340), (16244, 156770), (18910, 134668), (20305, 125416), (31354, 81220), (31868, 79910), (31964, 79670), (32488, 78385), (33667, 75640), (37820, 67334), (39835, 63928), (39955, 63736), (40610, 62708)]