21290108

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5717}}^1$

素因数の和:5754

約数の個数: 36

約数和(自身を含む): 45629640

約数和(自身を除く): 24339532

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 3724, 5717, 11434, 22868, 40019, 80038, 108623, 160076, 217246, 280133, 434492, 560266, 760361, 1120532, 1520722, 3041444, 5322527, 10645054, 21290108]

約数ペア:

[(1, 21290108), (2, 10645054), (4, 5322527), (7, 3041444), (14, 1520722), (19, 1120532), (28, 760361), (38, 560266), (49, 434492), (76, 280133), (98, 217246), (133, 160076), (196, 108623), (266, 80038), (532, 40019), (931, 22868), (1862, 11434), (3724, 5717)]