21263768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{479}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 20208232

約数列:

[1, 2, 4, 8, 31, 62, 124, 179, 248, 358, 479, 716, 958, 1432, 1916, 3832, 5549, 11098, 14849, 22196, 29698, 44392, 59396, 85741, 118792, 171482, 342964, 685928, 2657971, 5315942, 10631884, 21263768]

約数ペア:

[(1, 21263768), (2, 10631884), (4, 5315942), (8, 2657971), (31, 685928), (62, 342964), (124, 171482), (179, 118792), (248, 85741), (358, 59396), (479, 44392), (716, 29698), (958, 22196), (1432, 14849), (1916, 11098), (3832, 5549)]