21000340823

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{75991}}^1$

素因数の和:76143

約数の個数: 32

約数和(自身を含む): 27167443968

約数和(自身を除く): 6167103145

約数列:

[1, 7, 11, 37, 77, 97, 259, 407, 679, 1067, 2849, 3589, 7469, 25123, 39479, 75991, 276353, 531937, 835901, 2811667, 5851307, 7371127, 19681669, 30928337, 51597889, 81082397, 216498359, 272731699, 567576779, 1909121893, 3000048689, 21000340823]

約数ペア:

[(1, 21000340823), (7, 3000048689), (11, 1909121893), (37, 567576779), (77, 272731699), (97, 216498359), (259, 81082397), (407, 51597889), (679, 30928337), (1067, 19681669), (2849, 7371127), (3589, 5851307), (7469, 2811667), (25123, 835901), (39479, 531937), (75991, 276353)]