21827715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15991}}^1$

素因数の和:16019

約数の個数: 32

約数和(自身を含む): 42986496

約数和(自身を除く): 21158781

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15991, 47973, 79955, 111937, 207883, 239865, 335811, 559685, 623649, 1039415, 1455181, 1679055, 3118245, 4365543, 7275905, 21827715]

約数ペア:

[(1, 21827715), (3, 7275905), (5, 4365543), (7, 3118245), (13, 1679055), (15, 1455181), (21, 1039415), (35, 623649), (39, 559685), (65, 335811), (91, 239865), (105, 207883), (195, 111937), (273, 79955), (455, 47973), (1365, 15991)]