12216981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 19932160

約数和(自身を除く): 7715179

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 457, 469, 1273, 1371, 1407, 3199, 3819, 8683, 8911, 9597, 26049, 26733, 30619, 60781, 91857, 182343, 214333, 581761, 642999, 1745283, 4072327, 12216981]

約数ペア:

[(1, 12216981), (3, 4072327), (7, 1745283), (19, 642999), (21, 581761), (57, 214333), (67, 182343), (133, 91857), (201, 60781), (399, 30619), (457, 26733), (469, 26049), (1273, 9597), (1371, 8911), (1407, 8683), (3199, 3819)]