18774679

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 25320960

約数和(自身を除く): 6546281

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 313, 451, 779, 1463, 2191, 3157, 3443, 5453, 5947, 8569, 12833, 24101, 41629, 59983, 65417, 89831, 141163, 243827, 457919, 988141, 1706789, 2682097, 18774679]

約数ペア:

[(1, 18774679), (7, 2682097), (11, 1706789), (19, 988141), (41, 457919), (77, 243827), (133, 141163), (209, 89831), (287, 65417), (313, 59983), (451, 41629), (779, 24101), (1463, 12833), (2191, 8569), (3157, 5947), (3443, 5453)]