19929217

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3863}}^1$

素因数の和:3948

約数の個数: 16

約数和(自身を含む): 25224192

約数和(自身を除く): 5294975

約数列:

[1, 7, 11, 67, 77, 469, 737, 3863, 5159, 27041, 42493, 258821, 297451, 1811747, 2847031, 19929217]

約数ペア:

[(1, 19929217), (7, 2847031), (11, 1811747), (67, 297451), (77, 258821), (469, 42493), (737, 27041), (3863, 5159)]