21102543

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{823}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 39077376

約数和(自身を除く): 17974833

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 823, 1221, 2331, 2469, 2849, 3663, 5761, 7407, 8547, 9053, 17283, 25641, 27159, 30451, 51849, 63371, 81477, 91353, 190113, 213157, 274059, 334961, 570339, 639471, 1004883, 1918413, 2344727, 3014649, 7034181, 21102543]

約数ペア:

[(1, 21102543), (3, 7034181), (7, 3014649), (9, 2344727), (11, 1918413), (21, 1004883), (33, 639471), (37, 570339), (63, 334961), (77, 274059), (99, 213157), (111, 190113), (231, 91353), (259, 81477), (333, 63371), (407, 51849), (693, 30451), (777, 27159), (823, 25641), (1221, 17283), (2331, 9053), (2469, 8547), (2849, 7407), (3663, 5761)]