20121399

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 31942400

約数和(自身を除く): 11821001

約数列:

[1, 3, 9, 19, 27, 57, 61, 171, 183, 513, 549, 643, 1159, 1647, 1929, 3477, 5787, 10431, 12217, 17361, 31293, 36651, 39223, 109953, 117669, 329859, 353007, 745237, 1059021, 2235711, 6707133, 20121399]

約数ペア:

[(1, 20121399), (3, 6707133), (9, 2235711), (19, 1059021), (27, 745237), (57, 353007), (61, 329859), (171, 117669), (183, 109953), (513, 39223), (549, 36651), (643, 31293), (1159, 17361), (1647, 12217), (1929, 10431), (3477, 5787)]