21280128

素因数分解:

$2^7\times 3^1\times {\mathrm{151}}^1\times {\mathrm{367}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 57054720

約数和(自身を除く): 35774592

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 151, 192, 302, 367, 384, 453, 604, 734, 906, 1101, 1208, 1468, 1812, 2202, 2416, 2936, 3624, 4404, 4832, 5872, 7248, 8808, 9664, 11744, 14496, 17616, 19328, 23488, 28992, 35232, 46976, 55417, 57984, 70464, 110834, 140928, 166251, 221668, 332502, 443336, 665004, 886672, 1330008, 1773344, 2660016, 3546688, 5320032, 7093376, 10640064, 21280128]

約数ペア:

[(1, 21280128), (2, 10640064), (3, 7093376), (4, 5320032), (6, 3546688), (8, 2660016), (12, 1773344), (16, 1330008), (24, 886672), (32, 665004), (48, 443336), (64, 332502), (96, 221668), (128, 166251), (151, 140928), (192, 110834), (302, 70464), (367, 57984), (384, 55417), (453, 46976), (604, 35232), (734, 28992), (906, 23488), (1101, 19328), (1208, 17616), (1468, 14496), (1812, 11744), (2202, 9664), (2416, 8808), (2936, 7248), (3624, 5872), (4404, 4832)]