19686821

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{2113}}^1$

素因数の和:2153

約数の個数: 16

約数和(自身を含む): 24759168

約数和(自身を除く): 5072347

約数列:

[1, 7, 11, 77, 121, 847, 1331, 2113, 9317, 14791, 23243, 162701, 255673, 1789711, 2812403, 19686821]

約数ペア:

[(1, 19686821), (7, 2812403), (11, 1789711), (77, 255673), (121, 162701), (847, 23243), (1331, 14791), (2113, 9317)]