280736000

素因数分解:

$2^8\times 5^3\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:345

約数の個数: 144

約数和(自身を含む): 724459008

約数和(自身を除く): 443723008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 248, 250, 256, 283, 310, 320, 400, 496, 500, 566, 620, 640, 775, 800, 992, 1000, 1132, 1240, 1280, 1415, 1550, 1600, 1984, 2000, 2264, 2480, 2830, 3100, 3200, 3875, 3968, 4000, 4528, 4960, 5660, 6200, 6400, 7075, 7750, 7936, 8000, 8773, 9056, 9920, 11320, 12400, 14150, 15500, 16000, 17546, 18112, 19840, 22640, 24800, 28300, 31000, 32000, 35092, 35375, 36224, 39680, 43865, 45280, 49600, 56600, 62000, 70184, 70750, 72448, 87730, 90560, 99200, 113200, 124000, 140368, 141500, 175460, 181120, 198400, 219325, 226400, 248000, 280736, 283000, 350920, 362240, 438650, 452800, 496000, 561472, 566000, 701840, 877300, 905600, 992000, 1096625, 1122944, 1132000, 1403680, 1754600, 1811200, 2193250, 2245888, 2264000, 2807360, 3509200, 4386500, 4528000, 5614720, 7018400, 8773000, 9056000, 11229440, 14036800, 17546000, 28073600, 35092000, 56147200, 70184000, 140368000, 280736000]

約数ペア:

[(1, 280736000), (2, 140368000), (4, 70184000), (5, 56147200), (8, 35092000), (10, 28073600), (16, 17546000), (20, 14036800), (25, 11229440), (31, 9056000), (32, 8773000), (40, 7018400), (50, 5614720), (62, 4528000), (64, 4386500), (80, 3509200), (100, 2807360), (124, 2264000), (125, 2245888), (128, 2193250), (155, 1811200), (160, 1754600), (200, 1403680), (248, 1132000), (250, 1122944), (256, 1096625), (283, 992000), (310, 905600), (320, 877300), (400, 701840), (496, 566000), (500, 561472), (566, 496000), (620, 452800), (640, 438650), (775, 362240), (800, 350920), (992, 283000), (1000, 280736), (1132, 248000), (1240, 226400), (1280, 219325), (1415, 198400), (1550, 181120), (1600, 175460), (1984, 141500), (2000, 140368), (2264, 124000), (2480, 113200), (2830, 99200), (3100, 90560), (3200, 87730), (3875, 72448), (3968, 70750), (4000, 70184), (4528, 62000), (4960, 56600), (5660, 49600), (6200, 45280), (6400, 43865), (7075, 39680), (7750, 36224), (7936, 35375), (8000, 35092), (8773, 32000), (9056, 31000), (9920, 28300), (11320, 24800), (12400, 22640), (14150, 19840), (15500, 18112), (16000, 17546)]