21044457

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17581}}^1$

素因数の和:17613

約数の個数: 24

約数和(自身を含む): 36570560

約数和(自身を除く): 15526103

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17581, 52743, 123067, 158229, 334039, 369201, 1002117, 1107603, 2338273, 3006351, 7014819, 21044457]

約数ペア:

[(1, 21044457), (3, 7014819), (7, 3006351), (9, 2338273), (19, 1107603), (21, 1002117), (57, 369201), (63, 334039), (133, 158229), (171, 123067), (399, 52743), (1197, 17581)]