21954560

素因数分解:

$2^{16}\times 5^1\times {\mathrm{67}}^1$

素因数の和:104

約数の個数: 68

約数和(自身を含む): 53476968

約数和(自身を除く): 31522408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 256, 268, 320, 335, 512, 536, 640, 670, 1024, 1072, 1280, 1340, 2048, 2144, 2560, 2680, 4096, 4288, 5120, 5360, 8192, 8576, 10240, 10720, 16384, 17152, 20480, 21440, 32768, 34304, 40960, 42880, 65536, 68608, 81920, 85760, 137216, 163840, 171520, 274432, 327680, 343040, 548864, 686080, 1097728, 1372160, 2195456, 2744320, 4390912, 5488640, 10977280, 21954560]

約数ペア:

[(1, 21954560), (2, 10977280), (4, 5488640), (5, 4390912), (8, 2744320), (10, 2195456), (16, 1372160), (20, 1097728), (32, 686080), (40, 548864), (64, 343040), (67, 327680), (80, 274432), (128, 171520), (134, 163840), (160, 137216), (256, 85760), (268, 81920), (320, 68608), (335, 65536), (512, 42880), (536, 40960), (640, 34304), (670, 32768), (1024, 21440), (1072, 20480), (1280, 17152), (1340, 16384), (2048, 10720), (2144, 10240), (2560, 8576), (2680, 8192), (4096, 5360), (4288, 5120)]