21050841

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7537}}^1$

素因数の和:7573

約数の個数: 24

約数和(自身を含む): 34373280

約数和(自身を除く): 13322439

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7537, 22611, 52759, 143203, 158277, 369313, 429609, 1002421, 1107939, 3007263, 7016947, 21050841]

約数ペア:

[(1, 21050841), (3, 7016947), (7, 3007263), (19, 1107939), (21, 1002421), (49, 429609), (57, 369313), (133, 158277), (147, 143203), (399, 52759), (931, 22611), (2793, 7537)]