21000751893

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{521201}}^1$

素因数の和:521266

約数の個数: 36

約数和(自身を含む): 34244013804

約数和(自身を除く): 13243261911

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 121, 333, 363, 407, 1089, 1221, 3663, 4477, 13431, 40293, 521201, 1563603, 4690809, 5733211, 17199633, 19284437, 51598899, 57853311, 63065321, 173559933, 189195963, 212128807, 567587889, 636386421, 1909159263, 2333416877, 7000250631, 21000751893]

約数ペア:

[(1, 21000751893), (3, 7000250631), (9, 2333416877), (11, 1909159263), (33, 636386421), (37, 567587889), (99, 212128807), (111, 189195963), (121, 173559933), (333, 63065321), (363, 57853311), (407, 51598899), (1089, 19284437), (1221, 17199633), (3663, 5733211), (4477, 4690809), (13431, 1563603), (40293, 521201)]