20871165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 38396160

約数和(自身を除く): 17524995

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 197, 591, 985, 1009, 1379, 2955, 3027, 4137, 5045, 6895, 7063, 15135, 20685, 21189, 35315, 105945, 198773, 596319, 993865, 1391411, 2981595, 4174233, 6957055, 20871165]

約数ペア:

[(1, 20871165), (3, 6957055), (5, 4174233), (7, 2981595), (15, 1391411), (21, 993865), (35, 596319), (105, 198773), (197, 105945), (591, 35315), (985, 21189), (1009, 20685), (1379, 15135), (2955, 7063), (3027, 6895), (4137, 5045)]