257562880

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6491}}^1$

素因数の和:6543

約数の個数: 72

約数和(自身を含む): 636943104

約数和(自身を除く): 379380224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 6491, 7936, 9920, 12982, 19840, 25964, 32455, 39680, 51928, 64910, 103856, 129820, 201221, 207712, 259640, 402442, 415424, 519280, 804884, 830848, 1006105, 1038560, 1609768, 1661696, 2012210, 2077120, 3219536, 4024420, 4154240, 6439072, 8048840, 8308480, 12878144, 16097680, 25756288, 32195360, 51512576, 64390720, 128781440, 257562880]

約数ペア:

[(1, 257562880), (2, 128781440), (4, 64390720), (5, 51512576), (8, 32195360), (10, 25756288), (16, 16097680), (20, 12878144), (31, 8308480), (32, 8048840), (40, 6439072), (62, 4154240), (64, 4024420), (80, 3219536), (124, 2077120), (128, 2012210), (155, 1661696), (160, 1609768), (248, 1038560), (256, 1006105), (310, 830848), (320, 804884), (496, 519280), (620, 415424), (640, 402442), (992, 259640), (1240, 207712), (1280, 201221), (1984, 129820), (2480, 103856), (3968, 64910), (4960, 51928), (6491, 39680), (7936, 32455), (9920, 25964), (12982, 19840)]