258866013

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{1009}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 416281600

約数和(自身を除く): 157415587

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 643, 1009, 1929, 3027, 4501, 7063, 12217, 13503, 19171, 21189, 36651, 57513, 85519, 134197, 256557, 402591, 648787, 1946361, 4541509, 12326953, 13624527, 36980859, 86288671, 258866013]

約数ペア:

[(1, 258866013), (3, 86288671), (7, 36980859), (19, 13624527), (21, 12326953), (57, 4541509), (133, 1946361), (399, 648787), (643, 402591), (1009, 256557), (1929, 134197), (3027, 85519), (4501, 57513), (7063, 36651), (12217, 21189), (13503, 19171)]