21819952

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 53568000

約数和(自身を除く): 31748048

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 89, 112, 154, 176, 178, 199, 308, 356, 398, 616, 623, 712, 796, 979, 1232, 1246, 1393, 1424, 1592, 1958, 2189, 2492, 2786, 3184, 3916, 4378, 4984, 5572, 6853, 7832, 8756, 9968, 11144, 13706, 15323, 15664, 17512, 17711, 22288, 27412, 30646, 35024, 35422, 54824, 61292, 70844, 109648, 122584, 123977, 141688, 194821, 245168, 247954, 283376, 389642, 495908, 779284, 991816, 1363747, 1558568, 1983632, 2727494, 3117136, 5454988, 10909976, 21819952]

約数ペア:

[(1, 21819952), (2, 10909976), (4, 5454988), (7, 3117136), (8, 2727494), (11, 1983632), (14, 1558568), (16, 1363747), (22, 991816), (28, 779284), (44, 495908), (56, 389642), (77, 283376), (88, 247954), (89, 245168), (112, 194821), (154, 141688), (176, 123977), (178, 122584), (199, 109648), (308, 70844), (356, 61292), (398, 54824), (616, 35422), (623, 35024), (712, 30646), (796, 27412), (979, 22288), (1232, 17711), (1246, 17512), (1393, 15664), (1424, 15323), (1592, 13706), (1958, 11144), (2189, 9968), (2492, 8756), (2786, 7832), (3184, 6853), (3916, 5572), (4378, 4984)]