20954727

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:740

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 12430233

約数列:

[1, 3, 9, 17, 27, 51, 71, 153, 213, 459, 639, 643, 1207, 1917, 1929, 3621, 5787, 10863, 10931, 17361, 32589, 32793, 45653, 98379, 136959, 295137, 410877, 776101, 1232631, 2328303, 6984909, 20954727]

約数ペア:

[(1, 20954727), (3, 6984909), (9, 2328303), (17, 1232631), (27, 776101), (51, 410877), (71, 295137), (153, 136959), (213, 98379), (459, 45653), (639, 32793), (643, 32589), (1207, 17361), (1917, 10931), (1929, 10863), (3621, 5787)]