19784324

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 42663936

約数和(自身を除く): 22879612

約数列:

[1, 2, 4, 7, 14, 23, 28, 31, 46, 62, 92, 124, 161, 217, 322, 434, 644, 713, 868, 991, 1426, 1982, 2852, 3964, 4991, 6937, 9982, 13874, 19964, 22793, 27748, 30721, 45586, 61442, 91172, 122884, 159551, 215047, 319102, 430094, 638204, 706583, 860188, 1413166, 2826332, 4946081, 9892162, 19784324]

約数ペア:

[(1, 19784324), (2, 9892162), (4, 4946081), (7, 2826332), (14, 1413166), (23, 860188), (28, 706583), (31, 638204), (46, 430094), (62, 319102), (92, 215047), (124, 159551), (161, 122884), (217, 91172), (322, 61442), (434, 45586), (644, 30721), (713, 27748), (868, 22793), (991, 19964), (1426, 13874), (1982, 9982), (2852, 6937), (3964, 4991)]