28643840

素因数分解:

$2^9\times 5^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:257

約数の個数: 80

約数和(自身を含む): 70120512

約数和(自身を除く): 41476672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 167, 256, 268, 320, 334, 335, 512, 536, 640, 668, 670, 835, 1072, 1280, 1336, 1340, 1670, 2144, 2560, 2672, 2680, 3340, 4288, 5344, 5360, 6680, 8576, 10688, 10720, 11189, 13360, 17152, 21376, 21440, 22378, 26720, 34304, 42752, 42880, 44756, 53440, 55945, 85504, 85760, 89512, 106880, 111890, 171520, 179024, 213760, 223780, 358048, 427520, 447560, 716096, 895120, 1432192, 1790240, 2864384, 3580480, 5728768, 7160960, 14321920, 28643840]

約数ペア:

[(1, 28643840), (2, 14321920), (4, 7160960), (5, 5728768), (8, 3580480), (10, 2864384), (16, 1790240), (20, 1432192), (32, 895120), (40, 716096), (64, 447560), (67, 427520), (80, 358048), (128, 223780), (134, 213760), (160, 179024), (167, 171520), (256, 111890), (268, 106880), (320, 89512), (334, 85760), (335, 85504), (512, 55945), (536, 53440), (640, 44756), (668, 42880), (670, 42752), (835, 34304), (1072, 26720), (1280, 22378), (1336, 21440), (1340, 21376), (1670, 17152), (2144, 13360), (2560, 11189), (2672, 10720), (2680, 10688), (3340, 8576), (4288, 6680), (5344, 5360)]