20404131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{983}}^1$

素因数の和:1051

約数の個数: 32

約数和(自身を含む): 32306688

約数和(自身を除く): 11902557

約数列:

[1, 3, 11, 17, 33, 37, 51, 111, 187, 407, 561, 629, 983, 1221, 1887, 2949, 6919, 10813, 16711, 20757, 32439, 36371, 50133, 109113, 183821, 400081, 551463, 618307, 1200243, 1854921, 6801377, 20404131]

約数ペア:

[(1, 20404131), (3, 6801377), (11, 1854921), (17, 1200243), (33, 618307), (37, 551463), (51, 400081), (111, 183821), (187, 109113), (407, 50133), (561, 36371), (629, 32439), (983, 20757), (1221, 16711), (1887, 10813), (2949, 6919)]