18658904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4931}}^1$

素因数の和:4991

約数の個数: 32

約数和(自身を含む): 39061440

約数和(自身を除く): 20402536

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 4931, 9862, 19724, 39448, 54241, 108482, 212033, 216964, 424066, 433928, 848132, 1696264, 2332363, 4664726, 9329452, 18658904]

約数ペア:

[(1, 18658904), (2, 9329452), (4, 4664726), (8, 2332363), (11, 1696264), (22, 848132), (43, 433928), (44, 424066), (86, 216964), (88, 212033), (172, 108482), (344, 54241), (473, 39448), (946, 19724), (1892, 9862), (3784, 4931)]