281132800

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 216

約数和(自身を含む): 780644480

約数和(自身を除く): 499511680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 109, 124, 128, 130, 155, 160, 200, 208, 218, 248, 256, 260, 310, 320, 325, 400, 403, 416, 436, 496, 520, 545, 620, 640, 650, 775, 800, 806, 832, 872, 992, 1040, 1090, 1240, 1280, 1300, 1417, 1550, 1600, 1612, 1664, 1744, 1984, 2015, 2080, 2180, 2480, 2600, 2725, 2834, 3100, 3200, 3224, 3328, 3379, 3488, 3968, 4030, 4160, 4360, 4960, 5200, 5450, 5668, 6200, 6400, 6448, 6758, 6976, 7085, 7936, 8060, 8320, 8720, 9920, 10075, 10400, 10900, 11336, 12400, 12896, 13516, 13952, 14170, 16120, 16640, 16895, 17440, 19840, 20150, 20800, 21800, 22672, 24800, 25792, 27032, 27904, 28340, 32240, 33790, 34880, 35425, 39680, 40300, 41600, 43600, 43927, 45344, 49600, 51584, 54064, 56680, 64480, 67580, 69760, 70850, 80600, 83200, 84475, 87200, 87854, 90688, 99200, 103168, 108128, 113360, 128960, 135160, 139520, 141700, 161200, 168950, 174400, 175708, 181376, 198400, 216256, 219635, 226720, 257920, 270320, 283400, 322400, 337900, 348800, 351416, 362752, 432512, 439270, 453440, 515840, 540640, 566800, 644800, 675800, 697600, 702832, 865024, 878540, 906880, 1081280, 1098175, 1133600, 1289600, 1351600, 1405664, 1757080, 1813760, 2162560, 2196350, 2267200, 2579200, 2703200, 2811328, 3514160, 4325120, 4392700, 4534400, 5406400, 5622656, 7028320, 8785400, 9068800, 10812800, 11245312, 14056640, 17570800, 21625600, 28113280, 35141600, 56226560, 70283200, 140566400, 281132800]

約数ペア:

[(1, 281132800), (2, 140566400), (4, 70283200), (5, 56226560), (8, 35141600), (10, 28113280), (13, 21625600), (16, 17570800), (20, 14056640), (25, 11245312), (26, 10812800), (31, 9068800), (32, 8785400), (40, 7028320), (50, 5622656), (52, 5406400), (62, 4534400), (64, 4392700), (65, 4325120), (80, 3514160), (100, 2811328), (104, 2703200), (109, 2579200), (124, 2267200), (128, 2196350), (130, 2162560), (155, 1813760), (160, 1757080), (200, 1405664), (208, 1351600), (218, 1289600), (248, 1133600), (256, 1098175), (260, 1081280), (310, 906880), (320, 878540), (325, 865024), (400, 702832), (403, 697600), (416, 675800), (436, 644800), (496, 566800), (520, 540640), (545, 515840), (620, 453440), (640, 439270), (650, 432512), (775, 362752), (800, 351416), (806, 348800), (832, 337900), (872, 322400), (992, 283400), (1040, 270320), (1090, 257920), (1240, 226720), (1280, 219635), (1300, 216256), (1417, 198400), (1550, 181376), (1600, 175708), (1612, 174400), (1664, 168950), (1744, 161200), (1984, 141700), (2015, 139520), (2080, 135160), (2180, 128960), (2480, 113360), (2600, 108128), (2725, 103168), (2834, 99200), (3100, 90688), (3200, 87854), (3224, 87200), (3328, 84475), (3379, 83200), (3488, 80600), (3968, 70850), (4030, 69760), (4160, 67580), (4360, 64480), (4960, 56680), (5200, 54064), (5450, 51584), (5668, 49600), (6200, 45344), (6400, 43927), (6448, 43600), (6758, 41600), (6976, 40300), (7085, 39680), (7936, 35425), (8060, 34880), (8320, 33790), (8720, 32240), (9920, 28340), (10075, 27904), (10400, 27032), (10900, 25792), (11336, 24800), (12400, 22672), (12896, 21800), (13516, 20800), (13952, 20150), (14170, 19840), (16120, 17440), (16640, 16895)]