21339668

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5563}}^1$

素因数の和:5711

約数の個数: 24

約数和(自身を含む): 42998592

約数和(自身を除く): 21658924

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5563, 11126, 22252, 38941, 77882, 155764, 762131, 1524262, 3048524, 5334917, 10669834, 21339668]

約数ペア:

[(1, 21339668), (2, 10669834), (4, 5334917), (7, 3048524), (14, 1524262), (28, 762131), (137, 155764), (274, 77882), (548, 38941), (959, 22252), (1918, 11126), (3836, 5563)]