28740921

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{4421}}^1$

素因数の和:4632

約数の個数: 16

約数和(自身を含む): 42026688

約数和(自身を除く): 13285767

約数列:

[1, 3, 11, 33, 197, 591, 2167, 4421, 6501, 13263, 48631, 145893, 870937, 2612811, 9580307, 28740921]

約数ペア:

[(1, 28740921), (3, 9580307), (11, 2612811), (33, 870937), (197, 145893), (591, 48631), (2167, 13263), (4421, 6501)]