20741252

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5407}}^1$

素因数の和:5555

約数の個数: 24

約数和(自身を含む): 41793024

約数和(自身を除く): 21051772

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5407, 10814, 21628, 37849, 75698, 151396, 740759, 1481518, 2963036, 5185313, 10370626, 20741252]

約数ペア:

[(1, 20741252), (2, 10370626), (4, 5185313), (7, 2963036), (14, 1481518), (28, 740759), (137, 151396), (274, 75698), (548, 37849), (959, 21628), (1918, 10814), (3836, 5407)]