21806488

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{647}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 22983272

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 383, 647, 766, 1294, 1532, 2588, 3064, 4213, 5176, 7117, 8426, 14234, 16852, 28468, 33704, 56936, 247801, 495602, 991204, 1982408, 2725811, 5451622, 10903244, 21806488]

約数ペア:

[(1, 21806488), (2, 10903244), (4, 5451622), (8, 2725811), (11, 1982408), (22, 991204), (44, 495602), (88, 247801), (383, 56936), (647, 33704), (766, 28468), (1294, 16852), (1532, 14234), (2588, 8426), (3064, 7117), (4213, 5176)]