21551187

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54013}}^1$

素因数の和:54042

約数の個数: 16

約数和(自身を含む): 34568960

約数和(自身を除く): 13017773

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54013, 162039, 378091, 1026247, 1134273, 3078741, 7183729, 21551187]

約数ペア:

[(1, 21551187), (3, 7183729), (7, 3078741), (19, 1134273), (21, 1026247), (57, 378091), (133, 162039), (399, 54013)]