19911663

素因数分解:

$3^5\times {\mathrm{67}}^1\times {\mathrm{1223}}^1$

素因数の和:1305

約数の個数: 24

約数和(自身を含む): 30296448

約数和(自身を除く): 10384785

約数列:

[1, 3, 9, 27, 67, 81, 201, 243, 603, 1223, 1809, 3669, 5427, 11007, 16281, 33021, 81941, 99063, 245823, 297189, 737469, 2212407, 6637221, 19911663]

約数ペア:

[(1, 19911663), (3, 6637221), (9, 2212407), (27, 737469), (67, 297189), (81, 245823), (201, 99063), (243, 81941), (603, 33021), (1223, 16281), (1809, 11007), (3669, 5427)]