20558080

素因数分解:

$2^8\times 5^1\times {\mathrm{16061}}^1$

素因数の和:16082

約数の個数: 36

約数和(自身を含む): 49246092

約数和(自身を除く): 28688012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16061, 32122, 64244, 80305, 128488, 160610, 256976, 321220, 513952, 642440, 1027904, 1284880, 2055808, 2569760, 4111616, 5139520, 10279040, 20558080]

約数ペア:

[(1, 20558080), (2, 10279040), (4, 5139520), (5, 4111616), (8, 2569760), (10, 2055808), (16, 1284880), (20, 1027904), (32, 642440), (40, 513952), (64, 321220), (80, 256976), (128, 160610), (160, 128488), (256, 80305), (320, 64244), (640, 32122), (1280, 16061)]