21867520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4271}}^1$

素因数の和:4296

約数の個数: 44

約数和(自身を含む): 52468704

約数和(自身を除く): 30601184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4271, 5120, 8542, 17084, 21355, 34168, 42710, 68336, 85420, 136672, 170840, 273344, 341680, 546688, 683360, 1093376, 1366720, 2186752, 2733440, 4373504, 5466880, 10933760, 21867520]

約数ペア:

[(1, 21867520), (2, 10933760), (4, 5466880), (5, 4373504), (8, 2733440), (10, 2186752), (16, 1366720), (20, 1093376), (32, 683360), (40, 546688), (64, 341680), (80, 273344), (128, 170840), (160, 136672), (256, 85420), (320, 68336), (512, 42710), (640, 34168), (1024, 21355), (1280, 17084), (2560, 8542), (4271, 5120)]