20564883

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{523}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 31634928

約数和(自身を除く): 11070045

約数列:

[1, 3, 9, 17, 51, 153, 257, 523, 771, 1569, 2313, 4369, 4707, 8891, 13107, 26673, 39321, 80019, 134411, 403233, 1209699, 2284987, 6854961, 20564883]

約数ペア:

[(1, 20564883), (3, 6854961), (9, 2284987), (17, 1209699), (51, 403233), (153, 134411), (257, 80019), (523, 39321), (771, 26673), (1569, 13107), (2313, 8891), (4369, 4707)]