19861849

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:432

約数の個数: 16

約数和(自身を含む): 23184000

約数和(自身を除く): 3322151

約数列:

[1, 7, 137, 139, 149, 959, 973, 1043, 19043, 20413, 20711, 133301, 142891, 144977, 2837407, 19861849]

約数ペア:

[(1, 19861849), (7, 2837407), (137, 144977), (139, 142891), (149, 133301), (959, 20711), (973, 20413), (1043, 19043)]