21247072

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8623}}^1$

素因数の和:8651

約数の個数: 48

約数和(自身を含む): 52157952

約数和(自身を除く): 30910880

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8623, 17246, 34492, 60361, 68984, 94853, 120722, 137968, 189706, 241444, 275936, 379412, 482888, 663971, 758824, 965776, 1327942, 1517648, 1931552, 2655884, 3035296, 5311768, 10623536, 21247072]

約数ペア:

[(1, 21247072), (2, 10623536), (4, 5311768), (7, 3035296), (8, 2655884), (11, 1931552), (14, 1517648), (16, 1327942), (22, 965776), (28, 758824), (32, 663971), (44, 482888), (56, 379412), (77, 275936), (88, 241444), (112, 189706), (154, 137968), (176, 120722), (224, 94853), (308, 68984), (352, 60361), (616, 34492), (1232, 17246), (2464, 8623)]