20385756

素因数分解:

$2^2\times 3^6\times {\mathrm{6991}}^1$

素因数の和:7013

約数の個数: 42

約数和(自身を含む): 53495792

約数和(自身を除く): 33110036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 6991, 13982, 20973, 27964, 41946, 62919, 83892, 125838, 188757, 251676, 377514, 566271, 755028, 1132542, 1698813, 2265084, 3397626, 5096439, 6795252, 10192878, 20385756]

約数ペア:

[(1, 20385756), (2, 10192878), (3, 6795252), (4, 5096439), (6, 3397626), (9, 2265084), (12, 1698813), (18, 1132542), (27, 755028), (36, 566271), (54, 377514), (81, 251676), (108, 188757), (162, 125838), (243, 83892), (324, 62919), (486, 41946), (729, 27964), (972, 20973), (1458, 13982), (2916, 6991)]