20393388

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{881}}^1$

素因数の和:1534

約数の個数: 36

約数和(自身を含む): 51688728

約数和(自身を除く): 31295340

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 881, 1286, 1762, 1929, 2572, 2643, 3524, 3858, 5286, 5787, 7716, 7929, 10572, 11574, 15858, 23148, 31716, 566483, 1132966, 1699449, 2265932, 3398898, 5098347, 6797796, 10196694, 20393388]

約数ペア:

[(1, 20393388), (2, 10196694), (3, 6797796), (4, 5098347), (6, 3398898), (9, 2265932), (12, 1699449), (18, 1132966), (36, 566483), (643, 31716), (881, 23148), (1286, 15858), (1762, 11574), (1929, 10572), (2572, 7929), (2643, 7716), (3524, 5787), (3858, 5286)]