21464379

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 33408000

約数和(自身を除く): 11943621

約数列:

[1, 3, 9, 27, 29, 79, 87, 237, 261, 347, 711, 783, 1041, 2133, 2291, 3123, 6873, 9369, 10063, 20619, 27413, 30189, 61857, 82239, 90567, 246717, 271701, 740151, 794977, 2384931, 7154793, 21464379]

約数ペア:

[(1, 21464379), (3, 7154793), (9, 2384931), (27, 794977), (29, 740151), (79, 271701), (87, 246717), (237, 90567), (261, 82239), (347, 61857), (711, 30189), (783, 27413), (1041, 20619), (2133, 10063), (2291, 9369), (3123, 6873)]