21134533

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 4720667

約数列:

[1, 7, 29, 49, 107, 139, 203, 749, 973, 1421, 3103, 4031, 5243, 6811, 14873, 21721, 28217, 104111, 152047, 197519, 431317, 728777, 3019219, 21134533]

約数ペア:

[(1, 21134533), (7, 3019219), (29, 728777), (49, 431317), (107, 197519), (139, 152047), (203, 104111), (749, 28217), (973, 21721), (1421, 14873), (3103, 6811), (4031, 5243)]