21124978

素因数分解:

$2^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{1373}}^1$

素因数の和:1546

約数の個数: 24

約数和(自身を含む): 37122732

約数和(自身を除く): 15997754

約数列:

[1, 2, 7, 14, 49, 98, 157, 314, 1099, 1373, 2198, 2746, 7693, 9611, 15386, 19222, 67277, 134554, 215561, 431122, 1508927, 3017854, 10562489, 21124978]

約数ペア:

[(1, 21124978), (2, 10562489), (7, 3017854), (14, 1508927), (49, 431122), (98, 215561), (157, 134554), (314, 67277), (1099, 19222), (1373, 15386), (2198, 9611), (2746, 7693)]