256535856

素因数分解:

$2^4\times 3^3\times {\mathrm{29}}^1\times {\mathrm{20477}}^1$

素因数の和:20523

約数の個数: 80

約数和(自身を含む): 761781600

約数和(自身を除く): 505245744

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 29, 36, 48, 54, 58, 72, 87, 108, 116, 144, 174, 216, 232, 261, 348, 432, 464, 522, 696, 783, 1044, 1392, 1566, 2088, 3132, 4176, 6264, 12528, 20477, 40954, 61431, 81908, 122862, 163816, 184293, 245724, 327632, 368586, 491448, 552879, 593833, 737172, 982896, 1105758, 1187666, 1474344, 1781499, 2211516, 2375332, 2948688, 3562998, 4423032, 4750664, 5344497, 7125996, 8846064, 9501328, 10688994, 14251992, 16033491, 21377988, 28503984, 32066982, 42755976, 64133964, 85511952, 128267928, 256535856]

約数ペア:

[(1, 256535856), (2, 128267928), (3, 85511952), (4, 64133964), (6, 42755976), (8, 32066982), (9, 28503984), (12, 21377988), (16, 16033491), (18, 14251992), (24, 10688994), (27, 9501328), (29, 8846064), (36, 7125996), (48, 5344497), (54, 4750664), (58, 4423032), (72, 3562998), (87, 2948688), (108, 2375332), (116, 2211516), (144, 1781499), (174, 1474344), (216, 1187666), (232, 1105758), (261, 982896), (348, 737172), (432, 593833), (464, 552879), (522, 491448), (696, 368586), (783, 327632), (1044, 245724), (1392, 184293), (1566, 163816), (2088, 122862), (3132, 81908), (4176, 61431), (6264, 40954), (12528, 20477)]