21177968

素因数分解:

$2^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1093}}^1$

素因数の和:1281

約数の個数: 40

約数和(自身を含む): 47208288

約数和(自身を除く): 26030320

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 173, 346, 692, 1093, 1211, 1384, 2186, 2422, 2768, 4372, 4844, 7651, 8744, 9688, 15302, 17488, 19376, 30604, 61208, 122416, 189089, 378178, 756356, 1323623, 1512712, 2647246, 3025424, 5294492, 10588984, 21177968]

約数ペア:

[(1, 21177968), (2, 10588984), (4, 5294492), (7, 3025424), (8, 2647246), (14, 1512712), (16, 1323623), (28, 756356), (56, 378178), (112, 189089), (173, 122416), (346, 61208), (692, 30604), (1093, 19376), (1211, 17488), (1384, 15302), (2186, 9688), (2422, 8744), (2768, 7651), (4372, 4844)]