16987957

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 21176640

約数和(自身を除く): 4188683

約数列:

[1, 7, 19, 49, 71, 133, 257, 497, 931, 1349, 1799, 3479, 4883, 9443, 12593, 18247, 34181, 66101, 127729, 239267, 346693, 894103, 2426851, 16987957]

約数ペア:

[(1, 16987957), (7, 2426851), (19, 894103), (49, 346693), (71, 239267), (133, 127729), (257, 66101), (497, 34181), (931, 18247), (1349, 12593), (1799, 9443), (3479, 4883)]