1285757781

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1\times {\mathrm{8821}}^1$

素因数の和:9473

約数の個数: 32

約数和(自身を含む): 2140993536

約数和(自身を除く): 855235755

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 631, 1893, 4417, 6941, 8821, 13251, 20823, 26463, 48587, 61747, 97031, 145761, 185241, 291093, 679217, 2037651, 5566051, 16698153, 38962357, 61226561, 116887071, 183679683, 428585927, 1285757781]

約数ペア:

[(1, 1285757781), (3, 428585927), (7, 183679683), (11, 116887071), (21, 61226561), (33, 38962357), (77, 16698153), (231, 5566051), (631, 2037651), (1893, 679217), (4417, 291093), (6941, 185241), (8821, 145761), (13251, 97031), (20823, 61747), (26463, 48587)]