20781748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{13781}}^1$

素因数の和:13827

約数の個数: 24

約数和(自身を含む): 40519080

約数和(自身を除く): 19737332

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 377, 754, 1508, 13781, 27562, 55124, 179153, 358306, 399649, 716612, 799298, 1598596, 5195437, 10390874, 20781748]

約数ペア:

[(1, 20781748), (2, 10390874), (4, 5195437), (13, 1598596), (26, 799298), (29, 716612), (52, 399649), (58, 358306), (116, 179153), (377, 55124), (754, 27562), (1508, 13781)]