21302853

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 15856059

約数列:

[1, 3, 11, 13, 17, 23, 33, 39, 51, 69, 127, 143, 187, 221, 253, 299, 381, 391, 429, 561, 663, 759, 897, 1173, 1397, 1651, 2159, 2431, 2921, 3289, 4191, 4301, 4953, 5083, 6477, 7293, 8763, 9867, 12903, 15249, 18161, 23749, 28067, 32131, 37973, 49657, 54483, 55913, 71247, 84201, 96393, 113919, 148971, 167739, 308737, 417703, 546227, 645541, 926211, 1253109, 1638681, 1936623, 7100951, 21302853]

約数ペア:

[(1, 21302853), (3, 7100951), (11, 1936623), (13, 1638681), (17, 1253109), (23, 926211), (33, 645541), (39, 546227), (51, 417703), (69, 308737), (127, 167739), (143, 148971), (187, 113919), (221, 96393), (253, 84201), (299, 71247), (381, 55913), (391, 54483), (429, 49657), (561, 37973), (663, 32131), (759, 28067), (897, 23749), (1173, 18161), (1397, 15249), (1651, 12903), (2159, 9867), (2431, 8763), (2921, 7293), (3289, 6477), (4191, 5083), (4301, 4953)]