20865669

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 32569344

約数和(自身を除く): 11703675

約数列:

[1, 3, 11, 23, 33, 37, 69, 111, 253, 407, 743, 759, 851, 1221, 2229, 2553, 8173, 9361, 17089, 24519, 27491, 28083, 51267, 82473, 187979, 302401, 563937, 632293, 907203, 1896879, 6955223, 20865669]

約数ペア:

[(1, 20865669), (3, 6955223), (11, 1896879), (23, 907203), (33, 632293), (37, 563937), (69, 302401), (111, 187979), (253, 82473), (407, 51267), (743, 28083), (759, 27491), (851, 24519), (1221, 17089), (2229, 9361), (2553, 8173)]