20703081

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 32744448

約数和(自身を除く): 12041367

約数列:

[1, 3, 7, 21, 43, 101, 129, 227, 301, 303, 681, 707, 903, 1589, 2121, 4343, 4767, 9761, 13029, 22927, 29283, 30401, 68327, 68781, 91203, 160489, 204981, 481467, 985861, 2957583, 6901027, 20703081]

約数ペア:

[(1, 20703081), (3, 6901027), (7, 2957583), (21, 985861), (43, 481467), (101, 204981), (129, 160489), (227, 91203), (301, 68781), (303, 68327), (681, 30401), (707, 29283), (903, 22927), (1589, 13029), (2121, 9761), (4343, 4767)]