12211221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 18626688

約数和(自身を除く): 6415467

約数列:

[1, 3, 11, 33, 37, 73, 111, 137, 219, 407, 411, 803, 1221, 1507, 2409, 2701, 4521, 5069, 8103, 10001, 15207, 29711, 30003, 55759, 89133, 110011, 167277, 330033, 370037, 1110111, 4070407, 12211221]

約数ペア:

[(1, 12211221), (3, 4070407), (11, 1110111), (33, 370037), (37, 330033), (73, 167277), (111, 110011), (137, 89133), (219, 55759), (407, 30003), (411, 29711), (803, 15207), (1221, 10001), (1507, 8103), (2409, 5069), (2701, 4521)]