19813843

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:666

約数の個数: 16

約数和(自身を含む): 23304960

約数和(自身を除く): 3491117

約数列:

[1, 7, 67, 83, 469, 509, 581, 3563, 5561, 34103, 38927, 42247, 238721, 295729, 2830549, 19813843]

約数ペア:

[(1, 19813843), (7, 2830549), (67, 295729), (83, 238721), (469, 42247), (509, 38927), (581, 34103), (3563, 5561)]