28986880

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:116

約数の個数: 120

約数和(自身を含む): 76381272

約数和(自身を除く): 47394392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 67, 80, 104, 128, 130, 134, 160, 169, 208, 256, 260, 268, 320, 335, 338, 416, 512, 520, 536, 640, 670, 676, 832, 845, 871, 1040, 1072, 1280, 1340, 1352, 1664, 1690, 1742, 2080, 2144, 2560, 2680, 2704, 3328, 3380, 3484, 4160, 4288, 4355, 5360, 5408, 6656, 6760, 6968, 8320, 8576, 8710, 10720, 10816, 11323, 13520, 13936, 16640, 17152, 17420, 21440, 21632, 22646, 27040, 27872, 33280, 34304, 34840, 42880, 43264, 45292, 54080, 55744, 56615, 69680, 85760, 86528, 90584, 108160, 111488, 113230, 139360, 171520, 181168, 216320, 222976, 226460, 278720, 362336, 432640, 445952, 452920, 557440, 724672, 905840, 1114880, 1449344, 1811680, 2229760, 2898688, 3623360, 5797376, 7246720, 14493440, 28986880]

約数ペア:

[(1, 28986880), (2, 14493440), (4, 7246720), (5, 5797376), (8, 3623360), (10, 2898688), (13, 2229760), (16, 1811680), (20, 1449344), (26, 1114880), (32, 905840), (40, 724672), (52, 557440), (64, 452920), (65, 445952), (67, 432640), (80, 362336), (104, 278720), (128, 226460), (130, 222976), (134, 216320), (160, 181168), (169, 171520), (208, 139360), (256, 113230), (260, 111488), (268, 108160), (320, 90584), (335, 86528), (338, 85760), (416, 69680), (512, 56615), (520, 55744), (536, 54080), (640, 45292), (670, 43264), (676, 42880), (832, 34840), (845, 34304), (871, 33280), (1040, 27872), (1072, 27040), (1280, 22646), (1340, 21632), (1352, 21440), (1664, 17420), (1690, 17152), (1742, 16640), (2080, 13936), (2144, 13520), (2560, 11323), (2680, 10816), (2704, 10720), (3328, 8710), (3380, 8576), (3484, 8320), (4160, 6968), (4288, 6760), (4355, 6656), (5360, 5408)]